Price, Firm X's Quantity Supplied, Firm Y's Quantity Supplied, Firm Z's Quantity Supplied: $0, 0, 0, 0; $3, 2, 4, 6; $6, 4, 8, 12; $9, 6, 12, 18; $12, 8, 16, 24; $15, 10, 20, 30. Assuming these are the only three sellers, what is the relationship between price and quantity supplied?

A) Price and quantity supplied have a direct relationship
B) Price and quantity supplied have an inverse relationship
C) Price and quantity supplied have no relationship
D) Price and quantity supplied have a random relationship