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.
Example: Problem: a multiple choice test consists of 4 questions, and each question has 5 answer choices. in how many r ways can the test be completed if every question is unanswered ?
Options: a. 24, b. 120, c. 625, d. 720, e. 1024
Example solution: c
Example explanation: 5 choices for each of the 4 questions, thus total r of 5 * 5 * 5 * 5 = 5 ^ 4 = 625 ways to answer all of them. Hence, the answer is c.

Problem: Problem: the average price of an decoration piece increases over the years. if from 1990 to 1996, the price of the decoration piece increased by 13 % and from 1996 to 2001 it increased by 20 %, what is the price of the decoration piece in 2001 if the price in 1990 was $ 11500 ?
Options: a. $ 15594., b. $ 15322., c. $ 14786., d. $ 14543., e. $ 12988.
Solution: a