Milky Moo and Mega Cow Are the Only Sellers of Milk

Milky Moo and Mega Cow are the only sellers of milk. Milky Moo's supply function is at prices above $0.50 and zero at prices below $0.50. Mega Cow's supply function is at prices above $0.33 and zero at prices below $0.33. At a price of $0.45

A) The market supply of milk is between 9 and 10 units
B) The market supply of milk is between 4 and 5 units
C) The market supply of milk is between 5 and 6 units
D) The market supply of milk is between 1 and 2 units