What is the difference between pre$-$money and post$-$money valuation:

Question $7$ options:

$1)$

Company's value before investment vs actual equity investment

$2)$

An entrepreneur's sense of what the company is worth

$3)$

Actual money raised vs what was thought by the entrepreneur that could be raised

$4)$

Multiple of revenues between the two methods

$5)$

None of these are correct