Find the Equation of the Tangent Line to the Graph $f ( x ) = x ^ { 2 } + 5 x$

Multiple Choice

Find the equation of the tangent line to the graph of f at the given point.
- $f ( x ) = x ^ { 2 } + 5 x$ at $( 4,20 )$

A) $y = 2 x + 5$
B) $y = 2 x - 5$
C) $y = 13 x - 32$
D) $y = 13 x - 72$