Lisa added 4 7/15 and 5 2/5 to get a sum of 10 2/15.
Which of the following explains whether her answer is reasonable?

A.
No; 7/15and 2/5 are both less than 1, so the sum has to be less than 10.

B.
No; 7/15 and 2/5 are both less than 1/2, so the sum has to be less than 10.
C.
No; 7/15 and 2/5 are both greater than 1/2, so the sum has to be less than 10.

D.
Yes; 7/15 and 2/5 are both greater than 1/2, so the sum has to be greater than 10.