Match the statements in Column I with the values in Column II.
\textbf{Column I}\\
(A) $\int_{-\pi}^{\pi} \cos^2 x\,\frac{1}{1+a^x}\,dx$, $a > 0$\\
(B) $\int_0^{\pi/2} \frac{\sqrt{\sin x}}{\sqrt{\sin x}+\sqrt{\cos x}}\,dx$\\
(C) $\int_{-2}^{2} \frac{x^2}{1+5^x}\,dx$\\
(D) $\int_1^2 \frac{\sqrt{\ln(3-x)}}{\sqrt{\ln(3-x)}+\sqrt{\ln(x+1)}}\,dx$
\textbf{Column II}\\
(p) $\frac{1}{2}$\\
(q) $0$\\
(r) $\frac{\pi}{4}$\\
(s) $\frac{\pi}{2}$