Which statement describes why the system below has no solution?

{x+2y=53x+6y=10
A
The expression 3x+6y cannot equal both 10 and 15.
B
The expression 3x+6y cannot equal both 5 and 10.
C
The expressions x+2y and 3x+6y are not equal to each other.
D
The expression x+2y is not equal to 10.

A

The expression 3x+6y cannot equal both 10 and 15.