A shoe company is going to close one of its two stores and combine all the inventory from both stores. These polynomials represent the inventory in each store:
Store A: 1/2g^2+7/2
Store B:3g^2-4/5g+1/4
Which expression represents the combined inventory of the two stores?
A.7/2g^2-4/5g+15/4
B.7/2g^2-4/5g+4/3
C.7/2g^2+4/5g+15/4
D.7/2g^2+4/5g+4/3