International trade benefits a nation when: a. no domestic jobs are lost because of trade.

b. all nations are specializing in producing what they do best.

c. its revenue from selling abroad exceeds its outlays from buying abroad.

d. its trading partners experience reduced economic well-being.

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: