Choice-letters “a” and “b” are incorrect because costs change with respect to impartial variable, not with dependent variable or each. Choice-letter “c” is incorrect as a end result of the variability of bills is related to units of measurement and not usually in phrases of pesos of manufacturing. Opportunity prices are those benefits foregone in favor of the alternative chosen. They are read this sacrificed benefits, not incurred but is implied, and never recorded in the accounting books because they're theoretical.
P4 C. P5. B. P5 D. P6.
Prime prices. Discretionary prices. Sunk costs.... [...]