Evaluate the Function for the Indicated Value, Then Simplify $f ( t ) = t ^ { 2 } + 5 t$

Multiple Choice

Evaluate the function for the indicated value, then simplify.
- $f ( t ) = t ^ { 2 } + 5 t$ ; find $f ( t - 5 )$ , then simplify as much as possible.

A) $t ^ { 2 } - 5 t$
B) $t ^ { 2 } - 20 t$
C) $t ^ { 2 } + 15 t$
D) $t ^ { 2 } - 15 t$