Which of the following could be considered an advantage of the price system?
a. the government benefits because the price system doesn't account for the cost of public goods.
b. the environment benefits because the price system doesn't account for the cost of externalities.
c. markets benefit because the price system can be unstable.
d. producers and consumers benefit because the price system provides incentives in the marketplace.

Telecom co. enters into a two-year contract with a customer to provide wireless service (voice and data) for $40 per month. to induce customers, telecom co. provides a free phone. telecom co. normally sells the phone on a stand-alone basis for $200. telecom co. also charges the customer a one-time activation fee of $35.which of the following is true? a) there are two distinct performance obligations: the voice service and the data service b) the free phone constitutes as a marketing expense c) the activation fee is a separate performance obligationd) there are two distinct performance obligations: the wireless services and the phone