Which of the Following Double Entries Will Result in Decreases

Which of the following double entries will result in decreases in liabilities?
Please select all that apply.

A) Debit loan, credit bank (double entry to record the repayment of a loan from the bank) .
B) Debit sales, credit cash (double entry to record a refund of cash to a customer for a cancelled sale) .
C) Debit trade payables, credit bank (double entry to record cash paid to suppliers of goods and services made on credit) .
D) Debit capital account, credit bank (double entry to record the payment of cash to the owner of a business) .