When the market for product Y includes a positive externality:. A. marginal private benefit exceeds marginal social benefit.
B. marginal private cost exceeds marginal social cost.
C. marginal social cost exceeds marginal private cost.
D. marginal social benefit exceeds marginal private benefit.

D

Explanation:

A good has positive externality if the benefits to third parties not involved in production is greater than the cost. an example of an activity that generates positive externality is research and development. Due to the high cost of R & D, they are usually under-produced. Government can encourage the production of activities that generate positive externality by granting subsidies.

statement of owner's equity;