Solve. -How Can $42,000 Be Invested, Part at 4% Annual Simple

Multiple Choice

Solve.
-How can $42,000 be invested, part at 4% annual simple interest and the remainder at 10% annual simple interest, so that the interest earned by the two accounts is equal at the end of the year?

A) $30,000 invested at 4%; $12,000 invested at 10%
B) $22,000 invested at 4%; $20,000 invested at 10%
C) $20,000 invested at 4%; $22,000 invested at 10%
D) $12,000 invested at 4%; $30,000 invested at 10%