The prices of 4 jars of pasta sauce are shown below:
 Jar 1 : $1.60 16oz Jar 2: $2.40 20oz
 Jar 3: $2.64 24oz
 Jar 4: $2.88 32oz
 Which jar of pasta sauce has the greatest unit
 price?
 A. Jar 1
 B. Jar 2
 C. Jar 3
 D. Jar 4
 What did you do to get your answer?