A) We want the amount per ounce at Fromazing
We can see this from the question at $0.50 per ounce
B) The cost per ounce at Frostatic can be obtained by dividing the cost by the amount in ounce for any of the rows
Thus, we select any of the rows and we have this as;
The amount per ounce at Frostatic is $0.48
C) The deal at Frostatic is better as it is at a lesser cost