Jane has a checkbook balance of $68.00. She then writes two checks, one for $5.00 and one for $62.50. She also deposits $75.00. She then uses her calculator to determine her new balance. Which of the following is the correct series of keys she should press?        A. [68] [+] [75] [–] [62.50] [–] [5] [=]   B. [ON/C] [68] [+] [75] [=] [5] [=] [62.50] [=]   C. [68] [+] [75] [–] [5] [–] [62.50] [=]   D. [ON/C] [68] [–] [5] [–] [62.50] [+] [75] [=]