The price of ground coffee beans is d dollars for 8 ounces and each ounce makes c cups of brewed coffee. In terms of c and d, what is the dollar cost of the ground coffee beans required to make 1 cup of brewed coffee?

a)

b)

c)

d)

e) 8cd

I think its because because: if you have d dollars for 8 ounces. Then 1 ounce would be And if ONE ounce is needed to make 1 cup of brewed coffee so then

but why is the correct answer ??

Thanks in advance