If the cross elasticity of demand for good x with respect to the price of good y is positive, then goods x and y are

Alice, Bud, and Celia can produce rubber bands in a perfectly competitive market. If they enter the market, the minimum average total cost for a bundle of rubber bands, for the three of them is $2, $3, and $4, respectively

If the market price is $2.10 per bundle, then A) all three of them will enter the market. B) only Alice will enter the market. C) Alice and Bud will enter the market. D) Bud and Celia will enter the market. E) Alice and Celia will enter the market.

In the graph shown above, at a price of $3.00

A. there is a shortage.
B. there is a surplus.
C. quantity supplied is greater than quantity demanded.
D. None of these choices are correct.