An Accountant Has Money in Three Accounts That Pay 8

An accountant has money in three accounts that pay 8%, 10%, and 12% in annual interest. He has twice as much invested at 8% as he does at 10% and three times as much invested at 12% as he does at 10%. If the total interest from the three accounts if $372 for the year, how much is invested at each rate? ( Hint : Let x = the amount invested at 10%.)

A) $1,200 invested at 8% $600 invested at 10% $1,800 invested at 12%
B) $1,120 invested at 8% $560 invested at 8% $1,080 invested at 12%
C) $1,140 invested at 8% $570 invested at 10% $1,710 invested at 12%
D) $1,220 invested at 8% $610 invested at 10% $1,830 invested at 12%
E) $1,260 invested at 8% $630 invested at 10% $1,890 invested at 12%