Select the correct statement(s) from the following.

A. -orbitals are spherically symmetrical and have non-zero amplitude at the nucleus.
B. Spin with is called and spin with is called .
C. A radial distribution function is the probability density for finding an electron between and and for -orbitals .
D. A boundary surface or contour surface is drawn in space for an orbital on which the value of probability density is variable.
E. It is possible to draw a boundary surface diagram of a rigid size in which the probability of finding the electron is .
Choose the correct answer from the options given below.