You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

[EX Q]: Question: Patrick purchased 80 pencils and sold them at a loss equal to the selling price of 16 pencils. The cost of 80 pencils is how many times the selling price of 80 pencils?

 Option A:  0.75

 Option B:  1.2

 Option C:  1.8

 Option D:  2.4

 Option E:  4.25
[EX A]: Option B

[EX Q]: Question: Look at this series: -2, 0, 2, 4,... What number should come next?

 Option A: 6

 Option B: 12

 Option C: 8

 Option D: 9

 Option E: 10
[EX A]: Option A

[EX Q]: Question: 97 students take part in a test and the median score is 85. Which of the following descriptions must be correct?
I.At most 49 students’ score are equal to or more than 86.
II. At least 49 students’ score are less than 85.
III. At least 49 students’ score are equal to or more than 85.

 Option A: I

 Option B: II

 Option C: III

 Option D: III

 Option E: IIII
[EX A]:
Option C