Consider a sequential process with $3$ stations. The processing time $($minutes per unit$)$ and number of employees at each station are as follows:

$\backslash$table$[[,$Processing time$/$unit$,$Number of Employees$],[$Station A:$,4$ minutes,$1$ employee$],[$Station B:$,2$ minutes,$2$ employees$],[$Station C:$,5$ minutes,$1$ employee$]]$

What is the process capacity in units per hour?

$5$ units$/$hr$.$

$87$ units$/$hr$.$

$15$ units$/$hr$.$

$60$ units$/$hr$.$

$12$ units$/$hr$.$