18/48 as it's simplest form?

Jack is considering a list of features and fees for current bank: jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements? a. $44 b. $104 c. $144 d. $176

With this question, the answer with the red arrow is incorrect!

Hello i need with my math homework i don't understand can someone explain how this works