If a Price Taker Spends $200 to Produce 17 Units

If a price taker spends $200 to produce 17 units of output and spends $455 to produce 34 units,then the marginal cost of increasing production from 17 to 34 units is

A) $13.38.
B) $15.
C) $7.50.
D) $11.76.
E) impossible to calculate from this information.