When the price of a good is $5, the quantity demanded of a good is 30 units, and the quantity supplied of the good is 50 units.For every $1 decrease in the price of this good, quantity demanded rises by 5 units and quantity supplied falls by 5 units.The equilibrium price of this good is ___________and the equilibrium quantity of this good is _________ units.

a.

$3; 40

b.

$4; 35

c.

$2; 45

d.

$2; 35

e.

$3; 35