mathcal(Y), R, Theta, Phi皆已归一化，则下列式中哪些成立A. int_(0)^pi |Theta|^2 sin theta , dtheta = 1B. int_(0)^2pi int_(0)^pi |Theta Phi|^2 , dtheta , dvarphi = 1C. int_(0)^infty |R|^2 , dr = 1D. int_(0)^infty |mathcal(Y)|^2 , dr = 1

A. $\int_{0}^{\pi} |\Theta|^2 \sin \theta \, d\theta = 1$

B. $\int_{0}^{2\pi} \int_{0}^{\pi} |\Theta \Phi|^2 \, d\theta \, d\varphi = 1$

C. $\int_{0}^{\infty} |R|^2 \, dr = 1$

D. $\int_{0}^{\infty} |\mathcal{Y}|^2 \, dr = 1$