Find All the Values of X (If Any) Where the Tangent

Multiple Choice

Find all the values of x (if any) where the tangent line to the graph of the given equation is horizontal. Round your answer to two decimal places.
$y = 10 x ^ { 2 } + 11 x + 5$

A) $x = - 0.55$
B) $x = - 5.5$
C) $x = 0.55$
D) $x = 5.5$
E) $x = 0$