Blossom's Flowers Purchases Roses for Sale for Valentine's Day

Blossom's Flowers purchases roses for sale for Valentine's Day.The roses are purchased for $10 a dozen and are sold for $20 a dozen.Any roses not sold on Valentine's Day can be sold for $5 per dozen.The owner will purchase 1 of 3 amounts of roses for Valentine's Day: 100,200,or 400 dozen roses.Given 0.2,0.4,and 0.4 are the probabilities for the sale of 100,200,or 400 dozen roses,respectively,then the optimal expected monetary value (EMV) for buying roses is

A) $700.
B) $1,700.
C) $900.
D) $1,900.