Alles Supplies Bought $10 000 Worth of Goods from Ajax

Alles Supplies bought $10 000 worth of goods from Ajax Pty Ltd on credit.Before payment was made Ajax,in turn,purchased $4000 worth of stationery on credit from Alles Supplies.What is the general journal entry in Alles Supplies books to offset the amount owing to it against the amount it owes?

A) Accounts receivable,Ajax Ltd $4000 Accounts payable,Ajax Ltd $4000
B) Accounts receivable,Ajax Ltd 6000 Accounts payable,Ajax Ltd 6000
C) Accounts payable,Ajax Ltd 6000 Accounts receivable,Ajax Ltd 6000
D) Accounts payable,Ajax Ltd 4000 Accounts receivable,Ajax Ltd 4000