A one-foot stick is marked in 1/3 and 1/5 portion. How many total markings will there be, including the end points? Choose the most appropriate option:
A) 10 B) 7 C) 6 D) 5 E) 8

Rationale: "lcm of 15 = 15 1 / 3 marking are ( table of 5 ) 0 . . . . . . 5 . . . . . . 10 . . . . . 15 ( total = 4 ) 1 / 5 marking are ( table of 3 ) 0 . . . . . . . 3 . . . . . . 6 . . . . . . 9 . . . . . . . . 12 . . . . . . 15 ( total = 6 ) overlapping markings are 0 . . . . . . . . 15 ( total = 2 ) total markings = 4 + 6 - 2 = 8 answer = e"
Answer: E