Task: Question Answering
Input (English): Question: At a certain supplier, a machine of type A costs $30,000 and a machine of type B costs $70,000. Each machine can be purchased by making a 20 percent down payment and repaying the remainder of the cost and the finance charges over a period of time. If the finance charges are equal to 40 percent of the remainder of the cost, how much less would 2 machines of type A cost than 1 machine of type B under this arrangement?

 Option A: $10,000

 Option B: $11,200

 Option C: $12,000

 Option D: $12,800

 Option E: $13,200
Output (English): Option E