Given the task definition and input, reply with output. 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: a merchandise feedback online portal accords ' ratings ' to a product by recording the percentage of customers who have reported their views as either ' satisfied ' or ' unsatisfied ' only. the portal rounds off the exact percentage value calculated to the closest integral value. if the percentage of unsatisfied customers as recorded by the portal is 57 %, what is the least possible number of people that could have reported their views as ' satisfied ' ?
Options: a. 2, b. 3, c. 12, d. 43, e. 57
b