Bond angle in $PH_4 ^+$ is higher than that in $PH_3$. Why?

Question

$\begin{array}{1 1} \text{(a) Polymers are carbohydrates that cannot be further broken down into simpler units of other carbohydrates.} \\ \text{(b)In $PH_3$ ,lone pair- bond pair repulsion is more than bond pair-bond pair repulsion so that bond angles become less than normal tetrahedral angle} \\ \text{(c) In $PH_3$ ,lone pair- bond pair repulsion is more than bond pair-bond pair repulsion so that bond angles become more than normal tetrahedral angle} \\ \text{(d) None of the above}\end{array}$