Expression: You can't have your cake and eat it

[sini]

English Language Tests, Intermediate level

ESL/EFL Test #268 "Eating Idioms", question 3

You can't have your cake and eat it -- means: You can't ..........

(a) have another piece of cake
(b) have everything you want
(c) take the cake home
(d) possibly eat any more cake

English Language Tests, Intermediate level

ESL/EFL Test #268 "Eating Idioms", answer 3

You can't have your cake and eat it -- means: You can't have everything you want.

Correct answer: (b) have everything you want
_________________________

please explain the meaning of the answer

sini

[Mister Micawber]

.
You can't have your cake and eat it -- means: You can't have everything you want.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber