Question: How many member universities are there in the collegiate athletic conference that the Boston College Eagles men's soccer team is a member in?

Context paragraphs:
2007 Boston College Eagles football team: The 2007 Boston College Eagles football team represented Boston College during the 2007 NCAA Division I FBS football season.  It was Boston College's third season as a member of the Atlantic Coast Conference (ACC).  The Eagles were led by Jeff Jagodzinski in his first season as Boston College head coach.  Boston College has been a member of the Atlantic Coast Conference's (ACC) Atlantic Division since joining the league in 2005, after leaving the Big East Conference.  The Eagles played their home games in 2007 at Alumni Stadium in Chestnut Hill, Massachusetts, which has been their home stadium since 1957.

2008 Boston College Eagles football team: The 2008 Boston College Eagles football team represented Boston College during the 2008 NCAA Division I FBS football season.  It was Boston College's fourth season as a member of the Atlantic Coast Conference (ACC).  The Eagles were led by Jeff Jagodzinski in his second and final season as Boston College head coach.  Boston College has been a member of the Atlantic Coast Conference's (ACC) Atlantic Division since joining the league in 2005, after leaving the Big East Conference.  The Eagles played their home games in 2008 at Alumni Stadium in Chestnut Hill, Massachusetts, which has been their home stadium since 1957.

List of Boston College Eagles football seasons: The Boston College Eagles college football team competes as part of the National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision, representing Boston College in the Atlantic Division of the Atlantic Coast Conference (ACC).  Boston College has played their home games at Alumni Stadium in Chestnut Hill, Massachusetts since 1957.  Boston College claims one national championship in 1940, though the NCAA doesn't recognize it, and have played in 22 Bowl Games, winning 13.  With 626 wins over 120 seasons of football, Boston College ranks 51st all-time in win-loss records in the NCAA.  Boston College played as an Independent until joining the Big East Conference in 1991.  Boston College later joined the Atlantic Coast Conference in 2005.

2017 Boston College Eagles men's soccer team: The 2017 Boston College Eagles men's soccer team represents Boston college during the 2017 NCAA Division I men's soccer season.  The Tigers are led by head coach Ed Kelly, in his twenty ninth season.  They play home games at Newton Soccer Complex.  This is the team's 51st season playing organized men's college soccer and their 13th playing in the Atlantic Coast Conference.

Boston College Eagles men's soccer: The Boston College Eagles men's soccer team represents Boston College in men's soccer.  The team is a member of the Atlantic Coast Conference of the National Collegiate Athletic Association, having previously competed in the Big East Conference.  The Eagles have been led by coach Ed Kelly since 1988.

List of Boston College Eagles bowl games: The Boston College Eagles college football team competes as part of the National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision (FBS), representing Boston College in the Atlantic Division of the Atlantic Coast Conference (ACC).  Since the establishment of the team in 1892, Boston College has appeared in 25 bowl games. Included in these games are 4 combined appearances in the traditional "big four" bowl games (the Rose, Sugar, Cotton, and Orange), all of which came in their first six bowl appearances.  Their victory in the 1941 Sugar Bowl over Tennessee gave Boston College a claim on the national championship, having received votes from various selectors.  However, the NCAA only lists Minnesota as having won that year.

Atlantic Coast Conference: The Atlantic Coast Conference (ACC) is a collegiate athletic conference in the United States of America in which its fifteen member universities compete in the National Collegiate Athletic Association (NCAA)'s Division I, with its football teams competing in the Football Bowl Subdivision (FBS), the highest levels for athletic competition in US-based collegiate sports.  The ACC sponsors competition in twenty-five sports with many of its member institutions' athletic programs held in high regard nationally.  Members of the conference are Boston College, Clemson University, Duke University, Georgia Tech, Florida State University, North Carolina State University, Syracuse University, the University of Louisville, the University of Miami, the University of North Carolina, the University of Notre Dame, the University of Pittsburgh, the University of Virginia, Virginia Tech, and Wake Forest University.

Boston College Eagles football: The Boston College Eagles football team represents Boston College in the sport of American football.  The Eagles compete in the Football Bowl Subdivision (FBS) of the National Collegiate Athletic Association (NCAA) and the Atlantic Division of the Atlantic Coast Conference (ACC).  Begun in 1892, Boston College's football team was one of six "Major College" football programs in New England as designated by NCAA classifications, starting in 1938.  By 1981, and for the remainder of the twentieth century, BC was New England's sole Division I-A program.  It has amassed a 624–444–37 record and is 99–54 since the turn of the 21st century.

American Athletic Conference: The American Athletic Conference (also known as The American and sometimes abbreviated AAC) is an American collegiate athletic conference, featuring 12 member universities and three associate member universities that compete in the National Collegiate Athletic Association's (NCAA) Division I, with its football teams competing in the Football Bowl Subdivision (FBS).  Member universities represent a range of private and public universities of various enrollment sizes located primarily in urban metropolitan areas in the Northeastern, Midwestern, Western, and Southern regions of the United States.

2014 Boston College Eagles men's soccer team: The 2014 Boston College Eagles men's soccer team will be the college's 48th season of playing organized men's college soccer, and their 10th season playing in the Atlantic Coast Conference.

Supporting paragraphs: Boston College Eagles men's soccer Atlantic Coast Conference
Answer: fifteen