Sofia pays Sam $50 to mow her lawn every week. When the government levies a mowing tax of $10 on Sam, he raises his price to $60. Sofia continues to hire him at the higher price. What is the change in producer surplus, change in consumer surplus, and deadweight loss?
a. $0, $0, $10
b. $0, -$10, $0
c. +$10, -$10, $10
d. +$10, -$10, $0