list the correct answer with explanation from textbook radiologic science for technologists: physics, biology and protection 9th edition and what page it is from

3. Electrons in the M-shell:

a. Have lower binding energy than those in the N-shell

b. Never exceed 8 in number

c. Do not exceed 18 in number

d. Do not exist in an atom of carbon

e. Probably are closer to the nucleus than those in the L-shell

4. The binding energy of an electron to a nucleus:

a. Increases with increasing distance from the nucleus

b. Is higher for an L-shell than for an M-shell

c. Is higher for a low-Z atom than for a high-Z atom

d. Is higher for an N-shell than for an M-shell

e. Depends on the size of an electron