A. The relation is not a function because each input has the same output.
B. The relation is not a function because each input should have a unique output.
C. The relation is not a function because each input has exactly one output.
D. The relation is a function because each input has the same output.

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?