Garage Specialty Corporation manufactures joint products P and Q. During a recent period, joint costs amounted to $80,000 in the production of 20,000 gallons of P and 60,000 gallons of Q. Garage can sell P and Q at split-off for $2.20 per gallon and $2.60 per gallon, respectively. Alternatively, both products can be processed beyond the split-off point, as follows: (see image)

17,600.

$16,400.

$16,400.

$25,600.

some other amount.