What is the product?
(y^2+3y+7)(8y^2+y+1)

A). 8y^4+24y^3+60y^2+10y+7
B). 8y^4+25y^3+4y^2+10y+7
C). 8y^4+25y^3+60y^2+7y+7
D). 8y^4+25y^3+60y^2+10y+7