The Third Wave Computer Company Employs Sally to Assemble Personal

Multiple Choice

The Third Wave Computer Company employs Sally to assemble personal computers.Sally can assemble 1 computer if she works 1 hour,4 computers in 2 hours,7 computers in 3 hours,9 computers in 4 hours,and 10 computers in 5 hours.The cost of parts is $700 per computer,and the cost of employing Sally is $50 per hour.What is the marginal cost of producing the three computers Sally assembles during her second hour of work?

A) $2,150.
B) $2,850.
C) $2,800.
D) $700.
E) $750.