Which number has the greatest value

A. 4.17

B. 4.7

C. 4.01

D. 4.07

I think I might know the answer.

If you turn them into fractions, you might see which is the largest.

4.17 = 4 17/100

4.7 = 4 7/10

4.01 = 4 1/100

4. 07 = 4 7/100

So, the answer could be A.