Table $4-2$

$\backslash$table$[[$Price of Good ABC,Quantity Demanded,Quantity Supplied$],[$$$4,100,40],[5,80,80],[6,60,110],[7,50,160]]$

Refer to Table $4-2.$ Suppose that the government imposes a price ceiling in the market for good ABC at a price of $$4.$ The result of the price ceiling would be a

$$ of $$ units of good ABC.

$$ a$.$ surplus; $60$

b$.$ shortage; $60$

c$.$ surplus; $20$

d$.$ shortage; $20$