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: In a photography exhibition, some photographs were taken by Octavia the photographer, and some photographs were framed by Jack the framer. Jack had framed 24 photographs taken by Octavia, and 12 photographs taken by other photographers. If 36 of the photographs in the exhibition were taken by Octavia, how many photographs were either framed by Jack or taken by Octavia?

 Option A: 36

 Option B: 48

 Option C: 72

 Option D: 96

 Option E: 108

A: Option B
****
Q: Question: The original price of a shirt was $20. It was decreased to $15 . What is the percent decrease of the price of this shirt.

 Option A: 25%

 Option B: 35%

 Option C: 45%

 Option D: 55%

 Option E: 65%

A: Option A
****
Q: Question: Sum of the squares of 3 no. is 52 and the sum of their products taken two at a time is 72. Find the sum?

 Option A: 18

 Option B: 21

 Option C: 13

 Option D: 16

 Option E: 14

A:
Option E
****