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.

Question: If x represents the sum of the interior angles of a triangle and y represents the sum of the interior angles of a regular pentagon, then the addition x and y is equal to the sum of the interior angles of what geometric shape?

 Option A: Hexagon

 Option B: Square

 Option C: Rhombus

 Option D: Trapezoid

 Option E: Pentagon
Option A

Question: If x and y are negative integers, which of the following statements must be true?
I. (-x)^y is positive.
II. (-x)^(-y) is positive.
III. x^(-y) is positive.

 Option A: None

 Option B: II only

 Option C: I and II

 Option D: I and III

 Option E: I, II and III
Option C

Question: If 0.25 : x : : 2 : 6, then x is equal to

 Option A: 0.65

 Option B: 0.25

 Option C: 0.75

 Option D: 0.85

 Option E: None

Option C