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.

[Q]: Question: Kiran is younger than Bineesh by 7 years and their ages are in the respective ratio of 7:9. How old is Kiran?

Option A: 22.5

Option B: 24.5

Option C: 23.5

Option D: 25.5

Option E: 26.5
[A]: Option B

[Q]: Question: The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:

Option A: 3500

Option B: 4000

Option C: 4050

Option D: 5000

Option E: 6000
[A]: Option B

[Q]: Question: If x=2, which of the following is(are) true? I. x^2=2x II x/-4 = 1 III |x|=-x

Option A: II only

Option B: III only

Option C: II,III only

Option D: I only

Option E: I,III only
[A]:
Option D