The first entry in the last column is -7.50. Which of the following statements explains what this tells you about Plan A and Plan B? Hint Plan A costs $7.50 more than Plan B for someone who uses 50 minutes Plan B costs $7.50 more than Plan A for someone who uses 50 minutes. The Plan B customer used the phone for 7 minutes less than the Plan A customer. The Plan A customer used the phone for 7 minutes less than the Plan B customer