What language does the following CFG generate?

S $->$ ab $|$ aSb

Question $10$ options:

$\{$a$^$ib$^$i $|$ i $>=0\}$

$\{$a$^$ib$^$i $|$ i $>=1\}$

$\{$w in $\{$a$,$b$\}^*|$ w has the same number of a$\text{'}$s and b$\text{'}$s$\}$