Tim borrows $\$P$ at the rate of $r\%$ compounded annually. What can be the amount which he has to repay after $t$ year?

Question

$\begin{array}{1 1} (a)\; A = \frac{P}{(1+r)^n}\\(b)\; A=\frac{(1+r)^n}{P} \\ (c)\; A = (\frac{1-r}{P})^n \\ (d)\;A= P(1+r)^n \end{array}$