This illustrates the concept of high switching costs.
Option: C
Explanation:
Switching costs generally refers to a consumer's financial costs when moving between brands, goods, services, or suppliers. It is important to keep in mind, however, that these costs may include non-financial ones. Certain factors such as financial, time, and attempt-based costs often form portion of the cost of shifting.
The greater the switching price, the less probable a consumer will be prepared to turn on brands, goods, services or suppliers. The greater the switching cost to customers, the less benefit the customer receives from switching to a new brand, commodity, service or supplier.