Correct option is
B 
![\[\begin{array}{l} \Rightarrow(3+\mathrm{a})(1)=-1 \\ \Rightarrow \mathrm{a}=-4 \text {.(ii) } \end{array}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-77045488aad3468ecc314b112ec9489b_l3.png "Rendered by QuickLaTeX.com")
By (i) and (ii): 
If the tangent to the curve, 
