Solve the Problem by Combining Like Terms $5 x$ B) $10 x - 5$

Multiple Choice

Solve the problem by combining like terms.
-Find the perimeter of a triangle whose sides are of lengths 5x, 5x - 5, and x. An

A) $5 x$
B) $10 x - 5$
C) $11 x - 5$
D) $25 x ^ { 2 } - 25 x$