Detailed Instructions: Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
Problem:Problem: you collect baseball cards. suppose you start out with 15. maria takes half of one more than the number of baseball cards you have. since you ' re nice, you give peter 1 baseball card. since his father makes baseball cards, paul decides to triple your baseball cards. how many baseball cards do you have at the end ?
Options: a. 17, b. 18, c. 19, d. 20, e. 21
Solution:
b