How is the nominal rate of return on an investment different from the real rate of return on an investment?

Question $6$ options:

$1)$

Trick question$..$the nominal and the real rate of return are the same thing!

$2)$

The nominal $($quoted$)$ rate of return is the rate of return without adjusting for inflation; whereas the real rate of return is the inflation adjusted rate of return.

$3)$

The real rate of return is the rate of return without adjusting for inflation; whereas the nominal rate of return is the inflation adjusted rate of return.