4. Cynthia is considering driving or taking the train from Boston to New York City. Among other costs are I. The cost of gasoline; and, II. The annual cost of auto insurance. Regarding her decision: a. 1. The cost of gasoline is a relevant cost; II. The annual cost of auto insurance is a relevant cost. b. I. The cost of gasoline is a relevant cost; II. The annual cost of auto insurance is NOT a relevant cost. c. I. The cost of gasoline is NOT a relevant cost; II. The annual cost of auto insurance is a relevant cost. d. I. The cost of gasoline is NOT a relevant cost; II. The annual cost of auto insurance is NOT a relevant cost