Correcting trial balance omissions for cash sales and discount received

Steps:

• Assume original totals are $12,250 debit and$12,200 credit (consistent with choices and $50 difference).
• Record omitted cash sales: add $150 to debit (cash) and$150 to credit (sales), yielding $12,400 debit and$12,350 credit.
• Include omitted discount received: add $50 to credit (income), yielding$12,400 credit.
• Trial balance now balances with total of $12,400 per side.

Why D is correct:

• Trial balance totals equal the sum of original figures plus symmetric additions for double-entry omissions, resulting in $12,400 after balancing.

Why the others are wrong:

• A: Understates by omitting full $150 cash sales impact on both sides.
• B: Adds only $50 discount without$150 cash sales, leaving imbalance.
• C: Reflects original debit total without any corrections.

Final answer: D