The following table was created to compare two internet service plans, Plan A and Plan B. The monthly bill for each plan was computed based on the expected download speeds. While the actual monthly bills are not given, their differences are given in the last column. Data (Mb) Plan A Plan B Plan A - Plan B 100 * * minus7 .5 500 * * minus5 750 * * minus2 .5 1000 * * 0 2000 * * 10 .5 (a) The first entry in the last column is -7.5. Which of the following statements explains what this tells you about Plan A and Plan B? i. Plan A costs $7.50 more than Plan B for someone who has a 100Mb plan. ii. The Plan B customer used the internet for 7frac(1,2) fewer Mb than the Plan A customer. iii. The Plan A customer used the internet 7frac(1,2) fewer Mb than the Plan B customer. iv. Plan B costs $7.50 more than Plan A for someone who has a 100Mb plan