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: A reduction of 20% in the price of salt enables a lady to obtain 25 kgs more for Rs.100, find the original price per kg?

Option A: 6

Option B: 1

Option C: 5

Option D: 4

Option E: 7

A: Option B
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Q: Question: The difference between the place values of 7 and 3 in the number 527435 is

Option A: 4

Option B: 5

Option C: 45

Option D: 6970

Option E: None

A: Option D
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Q: Question: Jack and Christina are standing 360 feet apart on a level surface. Their dog, Lindy, is standing next to Christina. At the same time, they all begin moving toward each other. Jack walks in a straight line toward Christina at a constant speed of 5 feet per second and Christina walks in a straight line toward Jack at a constant speed of 7 feet per second. Lindy runs at a constant speed of 12 feet per second from Christina to Jack, back to Christina, back to Jack, and so forth. What is the total distance, in feet, that Lindy has traveled when the three meet at one place?

Option A: 270

Option B: 300

Option C: 330

Option D: 360

Option E: 390

A:
Option D
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