Answer:
B. pay-as-you-go.
Step-by-step explanation:
Pay-as-you-go business model is one in which the consumer is only charged for what he utilised, the more he uses a product the more he will pay.
This business model provides great satisfaction for the customer because he perceives it as a fair payment system where there is no overcharging for use of a product.
TravelCheap Inc. is using pay-as-you-go. Customers that rent cars for long journeys pay more than those that rent for just a mile drive.