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: the length of minute hand of a clock is 5.4 cm. what is the area covered by this in 20 minutes
Options: a. 15.27, b. 16.27, c. 17.27, d. 30.54, e. 30.27
d