A couple planning a vacation needs to choose between four different modes of transportation as shown in the table. Depending on the weather, either excellent, normal, or bad, they have estimated their daily comfort expenses. Excellent Weather Normal Weather Bad Weather Plane $70 $51 $38 Train $22 $46 $90 Automobile $9 $14 $52 Boat $44 $35 $24 An optimistic couple would opt for which transportation mode based on the information presented