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.
--------
Question: Problem: a car is 15 minutes late by running at a speed of 4 / 5 th of its actual speed. the actual time taken by the car to cover that distance is :
Options: a. 30 minutes, b. 1 hour, c. 2 hours, d. 3 hours, e. none of these

Answer: b


Question: Problem: there are 15 boys and 10 girls in a class. if three students are selected at random, in how many ways that 1 girl or 2 boys are selected ?
Options: a. 100, b. 105, c. 115, d. 120, e. 125

Answer: c


Question: Problem: in the rectangular coordinate system, if the line x = 4 y + 5 passes through points ( m, n ) and ( m + 2, n + p ), what is the value of p ?
Options: a. 3, b. 2, c. 1 / 2, d. 1 / 3, e. 1 / 4

Answer:
c