Anna drove at a consistent rate 63 mph for 3.2 hours. she determined she drove 201.6 miles. which best explains the reasonableness of anna's answer?

a) there are three digits to the left of the decimal in the factors and three digits to the left of the decimal in the answer, so anna answe is reasonable.

b) there is one digit to the right of the decimal in the factors and one digit to the right of the decimal in the answer, so anna's answer is reasonable.

c) anna answer is reasonable because 600x3 is 180, and 180 is reasonably close to 201.6.

d) annas answer is reasonable because 70 x4 is 280, and 280 is reasonably close to you 201.6