An Electron with Energy E Is Incident Upon a Potential

Multiple Choice

An electron with energy E is incident upon a potential energy barrier of height E_pot < E and thickness L.The reflection coefficient R:

A) is always equal to zero
B) is always equal to 1
C) does not depend on E - E_pot
D) is, in general, not equal to zero
E) is equal to T + 1 where T is the transmission coefficient