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: There is one highland where planes get fuel. A plan can cover the half of the world with full tank. A plane can transfer fuel from one plane to the other in the air. How many planes are required to make one plane cover the entire world once. Starting point of the travel is the Highland and coming back to the same Highland. All the other planes giving fuels to this Plane should also come back to the same highland and they don't have to cover the entire world.

 Option A: 2

 Option B: 3

 Option C: 4

 Option D: 5

 Option E: 6
Option D

Question: Anand and Deepak started a business investing Rs. 22,500 and Rs. 35,000 respectively. Out of a total profit of Rs. 13,800, Deepak's share is?

 Option A: 8428

 Option B: 8199

 Option C: 8400

 Option D: 8419

 Option E: 8412
Option C

Question: The diagonals of a rhombus are 12 cm and 20 cm. Find its area?

 Option A: 329

 Option B: 288

 Option C: 120

 Option D: 238

 Option E: 31

Option C