Answer the following questions using the information below: Ruben intends to sell his customers a special round-trip airline ticket package. He is able to purchase the package from the airline carrier for $150 each. The round-trip tickets wili be sold for $200 each and the airline intends to reimburse Ruben for any unsold ticket packages. Fixed costs include $5,000 in advertising costs. 7) What is the contribution margin per ticket package? 7) A) $50 B) $100 C) $150 D) $200