The Domestic Market for Calculators Is Perfectly Competitive and Is $Q ^ { d } = 100 - P$

Multiple Choice

The domestic market for calculators is perfectly competitive and is in equilibrium. Domestic demand is given by $Q ^ { d } = 100 - P$ and domestic supply is given by $Q ^ { s } = 4 P$ . The world price for calculators is $\$ 10$ . How many units of calculators will be imported?

A) 0
B) 10
C) 30
D) 50