If the production of 25 sets of binoculars per day costs a firm $1,500.00 and the production of 26 sets of binoculars per day costs a firm $1,550.00, the marginal cost of producing 26 rather than 25 sets of binoculars per day is .A) $50.00.
B) $60.00.
C) $55.00.
D) $59.62.

Kirnon clinic uses client-visits as its measure of activity. during july, the clinic budgeted for 3,250 client-visits, but its actual level of activity was 3,160 client-visits. the clinic has provided the following data concerning the formulas to be used in its budgeting: fixed element per month variable element per client-visitrevenue - $ 39.10personnel expenses $ 35,100 $ 10.30medical supplies 1,100 7.10occupancy expenses 8,100 1.10administrative expenses 5,100 0.20total expenses $ 49,400 $ 18.70the activity variance for net operating income in july would be closest to: