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.
Q: Problem: two numbers are in the ratio 3: 4. if their l. c. m. is 60. what is sum of the numbers ?
Options: a. 35, b. 56, c. 76, d. 84, e. 85
A:
a