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: in a factory, there are 90 % technicians and 10 % non - technicians. if the 90 % of the technicians and 10 % of non - technicians are permanent employees, then the percentage of workers who are temporary is ?
Options: a. 62 %, b. 57 %, c. 52 %, d. 82 %, e. 42 %
A:
d