Process $1$

Capacity $=$

$40$ units $\frac{?}{hr}\backslash$begin$\{$tabular$\}\{$l$\}$

Process $2\backslash$

Capacity $=\backslash$

$50$ units $\frac{?}{hr}$

$,,$

$\backslash$table$[]$

Process $3\backslash$

Capacity $=\backslash$

$60$ units $\frac{?}{hr}$

$$

$\backslash$table$[]$

Process $4\backslash$

Capacity $=\backslash$

$70$ units $\frac{?}{hr}$

$\backslash$end$\{$tabular$\}$

Consider the system composed of four processes linked by a conveyor belt. There is no storage between these processes pictured below. Which statement is BEST?

Overall system improvement efforts should focus on process $1.$

The overall system output is $220$ units$/$hr$.$

The process that determines the system's capacity is process $4.$

If only process $3$ experiences $5$ minutes of unplanned downtime, the system's overall output is diminished.