Which of the Following Is an Example of a Put

Multiple Choice

Which of the following is an example of a put option which is at the money?

A) The option to sell at $11, the stock is worth $12.
B) The option to buy at $13, the stock is worth $12.
C) The option to sell at $12, the stock is worth $12.
D) The option to sell at $13, the stock is worth $12.
E) The option to buy at $11, the stock is worth $12