Maya is visiting her favorite candy store, the Sugar Spoon. The candy there is in self-serve bins, so Maya can pick out exactly the amount she wants. She has$30 to spend, and she wants to get a combination of saltwater taffy that costs $9 per pound and chocolate that costs $2 per pound.

Which pairs(t,c) represent possible amounts of taffy and chocolate, in pounds, that Maya could buy?

a.) (0.5,2.5)

b.) (1,2)

c.) (1.5,1.25)

d,) (2,1)