Consider the following four step process:

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Station A has a capacity of $10$ units per minute per worker. There are currently $4$ workers at station A$.$

Station B has a capacity of $7$ units per minute per worker. There are currently $5$ workers at station B$.$

Station C has a capacity of $30$ units per minute per worker. There are currently $2$ workers at station C$.$

Station D has a capacity of $15$ units per minute per worker. There is currently $3$ workers at station D$.$

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What is the current capacity of this process?

Group of answer choices

$7$ units$/$min

$60$ units$/$min

$35$ units$/$min

$180$ units$/$min