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Answer (A) is correct . To break even, the interest that JKL can earn on the early deposits must at least equal the excess of the wire transfer fee over the cost of the DTC. Transfer amount × 9% × (2 days ÷ 360 days)= $12 WT – $1.50DTC Transfer amount ×0 .05%?= $10.50 Transfer amount?= $21,000

Answer (B) is incorrect because The amount of $24,000 results from using the full cost of the wire transfer rather than the incremental cost.
Answer (C) is incorrect because The amount of $27,000 results from adding, rather than subtracting, the cost of the depository transfer check to the cost of the wire transfer.
Answer (D) is incorrect because The amount of $42,000 results from using only 1 day of interest rather than 2.