Brian and Beatrice Decide to Place $18,200 of Their Savings

Brian and Beatrice decide to place $18,200 of their savings into investments. They put some in a money market account earning 4.5% interest, some in a mutual fund that has been averaging 5.7% a year, and some in a stock that rose 8.1% last year. If they put $4000 more in the money market than in the mutual fund and the mutual fund and stocks have the same growth in the next year as they did in the previous year, they will earn $1036.20 in a year. How much money did they put in each of the three investments?

A) $3100 at 4.5%, $7100 at 5.7%, $8000 at 8.1%
B) $8900 at 4.5%, $4900 at 5.7%, $4400 at 8.1%
C) $4900 at 4.5%, $4400 at 5.7%, $8900 at 8.1%
D) $7100 at 4.5%, $8000 at 5.7%, $3100 at 8.1%