What are the approximate unit prices of a 16-ounce package of frozen green beans that sells for $3.25 and a 28-ounce package of frozen green beans that sells for $4.29
a) 0.20/oz and 0.09/oz
b) 0.20/oz and 0.15/oz
c) 0.32/oz and 0.21/oz
d) 0.10/oz and 0.35/oz