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: in may mrs lee ' s earnings were 50 percent of the lee family ' s total income. in june mrs lee earned 20 percent more than in may. if the rest of the family ' s income was the same both months, then, in june, mrs lee ' s earnings were approximately what percent of the lee family ' s total income ?
Options: a. 55, b. 56, c. 34, d. 78, e. 23
a