Economic Analysis Suggest That in a Competitive Market Economy, When

Economic analysis suggest that in a competitive market economy, when an entrepreneur has made a large profit,

A) consumer benefits must have been reduced by at least the amount of the profit.
B) other producers have lost profits of the same size.
C) economic progress for society as a whole has normally been enhanced.
D) luck or chance, rather than productive activity, has nearly always been the largest factor.