A factory makes dress shirts using the $5$ step process below with the capacity shown for each step. Which step should the factory keep busy, make the priority and try to increase its capacity? $($Slides $14-15)$

$1-$ Cutting: $90$ shirts$/$hour

$2-$ Rough Sewing: $70$ shirts$/$hour

$3-$ Finish Sewing: $65$ shirts$/$hour

$4-$ Quality Check: $110$ shirts$/$hour

$5-$ Packing: $80$ shirts$/$hour

Group of answer choices

Step $3-$ Finish Sewing

Step $4-$ Quality Check

Step $5-$ Packing

Step $1-$ Cutting

Step $2-$ Rough Sewing