Error Analysis:

Find the error in the problem simplified below:
3√5 (√2 + √5)
6√10 + 3√25
6√10 + 3 • 5
6√10 + 15

A. The problem wasn’t multiply correctly.
B. There was no error made.
C. The problem was not simplified correctly.
D. Only like radicals can be multiplied to each other.

C. The problem was not simplified correctly.