Isabelle has $84.00 in her account on Sunday. Over the next week, she makes the following changes to her balance via deposits and purchases: Day Debit ($) Credit ($) Monday 22.35 --- Tuesday 47.60 10.29 Wednesday 15.44 --- Thursday 11.25 --- Friday 9.78 22.69 Saturday 30.54 18.86 On which day or days does Isabelle get charged an overdraft fee? I. Thursday II. Friday III. Saturday a. I only b. I and III c. II and III d. III only