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: the lenght of a room is 5.5 m and width is 4 m. find the cost of paving the floor by slabs at the rate of rs. 950 per sq. metre.
Options: a. s. 20,550, b. s. 15,600, c. s. 20,900, d. s. 17,600, e. s. 17,900
A:
c