A Profit-Maximizing Monopolist Faces a Demand Function Given by Q

A profit-maximizing monopolist faces a demand function given by q = 1000 - 20p, where p is the price of her output in dollars. She has a constant marginal cost of 20 dollars per unit of output. In an effort to induce her to increase her output, the government agrees to pay her a subsidy of $10 for every unit that she produces. She will

A) increase her price and lower her output.
B) decrease her price by $5 per unit.
C) decrease her price by $10 per unit.
D) decrease her price by more than $10 per unit but by less than $16 per unit.
E) decrease her price by more than $16 per unit.