The unit improvement factor for a $60\%$ learning curve at $25$ units is $0\mathrm{.}0933.$ The first and second timings of a person doing a job are $5$ minutes and $3$ minutes, respectively. Which of the below is the learning$-$adjusted time estimate for unit number $25$

Question $4$ options:

$0\mathrm{.}4665$ minutes

$0\mathrm{.}0933$ minutes

$4\mathrm{.}665$ minutes

$9\mathrm{.}33$ minutes

$3$ minutes