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: Mr. Evans will states that each of his children will receive an equal share of his estate and that his grandchildren will split a portion of the estate that is equal to the share received by each of his children. If Mr. Evans has 4 children and 5 grandchildren, then approximately what percentage of Mr. Evans estate will each grandchild receive?

Option A: 20%

Option B: 17%

Option C: 4.0%

Option D: 3.3%

Option E: 2.8%
[A]: Option C

[Q]: Question: A tank holds x gallons of a saltwater solution that is 20% salt by volume. One Fourth of the water is evaporated, leaving all of the salt. When 5 Gallons of water and 10 gallons of salt are added, the resulting mixture is 33 1/3 % salt by volume. What is the value of x?

Option A: 37.5

Option B: 75

Option C: 100

Option D: 150

Option E: 175
[A]: Option B

[Q]: Question: If the perimeter of a rectangular garden is 800 m, its length when its breadth is 100 m is?

Option A: 286 m

Option B: 899 m

Option C: 300 m

Option D: 166 m

Option E: 187 m
[A]:
Option C