If the price and quantity for a normal good, Good A, is $7 and 5 units at the original equilibrium, what is one possibility for the new equilibrium of Good A if we see income increase and all other factors stay constant?
a. $6 and 4 units
b. $6 and 6 units
c. $8 and 0 units
d. $8 and 6 units
e. $8 and 4 units