Alpha received a statement of account from a supplier Beta, showing a balance to be paid of $8,950. Alpha's purchase ledger account for Beta shows a...

Alpha received a statement of account from a supplier Beta, showing a balance to be paid of $8,950. Alpha’s

purchase ledger account for Beta shows a balance due to Beta of $4,140.

Investigation reveals the following:

(1) cash paid to Beta of $4,080 has not been accounted for by Beta

(2) Alpha’s ledger account has not been adjusted for $40 of cash discount disallowed by Beta

What discrepancy remains between Alpha’s and Beta’s records after allowing for these items?

A nil

B $690

C $770

D $730