Hello!
First of all, let's see how much money you would have.
224.37-30.79=193.58
Now we subtract 200 and 193.58 to find how much we need to deposit.
200=193.58=6.42
As you can see, we need to deposit at least 6.42 to not receive a fee. This could be represented as the inequality below.
d≥6.42
Therefore, this matches B. which is our correct answer.
I hope this helps!