A $200 credit to Service Fees in the general; journal was posted

as $2,000.
a. error affects the trial balance totals
b. error DOES NOT affect the trial balance totals
c. a correcting entry is required
d. both B and C

d. both B and C

The error affects the trial balance totals, as the $1,800 difference between the posted and correct amounts for the Service Fees account will result in an imbalance in the trial balance. Additionally, a correcting entry is required to rectify the error and adjust the account balance to the correct amount. Hence, both B (error does not affect the trial balance totals) and C (a correcting entry is required) are correct.