Question: Alpha is a famous but eccentric musician who plays only four concerts a year, each to an audience of 5,000 people. She allows no recordings of her music. The price of a concert ticket increases by $10 each year, but Alpha doesn't change the number of concerts she gives, the number of seats per concert, or her recording policy. Alpha is behaving like a:

A. Perfectly elastic supplier

B. Perfectly inelastic supplier

C. Unit-elastic supplier