Find the intervals in which the following functions are strictly increasing or decreasing: $(a) \;x^2 + 2x - 5$

Question

$\begin{array}{1 1}(A)\;\text{Strictly decreasing for} x<-1 \text{and strictly increasing for} x>-1. \\ (B)\;\text{Strictly increasing for} x<-1 \text{and strictly decreasing for}x>-1. \\ (C)\;\text{Strictly decreasing for} x<-1 \text{and strictly decreasing for} x>-1. \\ (D)\;\text{Strictly increasing for} x<-1 \text{and strictly decreasing for} x>-1\end{array} $