In January 2018, Khors Company Issued Nonqualified Stock Options to Its

In January 2018, Khors Company issued nonqualified stock options to its CEO, Jenny Svaro. Because the company does not expect Ms. Svaro to leave the company, the options vest at the time they are granted with a total value of $50,000. In December of 2018, the company experienced a surge in its stock price, and Ms. Svaro exercises the options. The total bargain element at the time of exercise is $40,000. For 2018, what is the nature of the book-tax difference due to the options exercised?

A) Favorable and temporary.
B) Favorable and permanent.
C) Unfavorable and temporary.
D) Unfavorable and permanent.
E) Not enough information to determine.