A Wholesale Nursery Purchases Six Dozen Gladiolus Bulbs for $5

A wholesale nursery purchases six dozen gladiolus bulbs for $5.The nursery sells the six dozen resulting flowers to a wholesale florist for $10.The wholesale florist delivers the flowers to a retail florist for $15.The flowers are sold by the retail florist for $75 to the bereaved Jones family to use at great-grandfather Jones's wake.What is the value added by the retail florist?

A) $10
B) $15
C) $25
D) $60
E) $75