What is the activity rate for production setup?

A) $2,500 per setup
B) $833 per setup
C) $625 per setup
D) $400 per setup

The total cost per unit is $43, with $30 being variable costs. This means the fixed costs (including production setup) are $13 per unit ($43 total cost - $30 variable cost). However, the question seems to lack sufficient information to directly calculate the activity rate for production setup, such as the number of setups or the proportion of the $13 that pertains to setups specifically. The provided answer (C) $625 per setup, cannot be accurately determined with the given information. My explanation previously assumed a direct calculation was possible, but without additional data regarding setups, the correct activity rate for production setup cannot be determined from the information provided.