Pfizer Inc., a global pharmaceutical company, offers several different types of stock-based compensation to its employees. Pfizer reports under U.S. GAAP. Use the disclosures provided in Exhibit 19.3 to answer the following questions.

Required

a. What types of stock compensation plans does Pfizer offer?

b. What was the total expense related to these plans in 2016, 2015, and 2014? What is the expense related to stock-based compensation as a percentage of net income? Pfizer's net income was $7,125, $6,960, and $9,135 million in 2016, 2015, and 2014, respectively.

c. How many shares of restricted stock units were granted in 2016? What is the vesting period? What is amount of compensation expense that will be recognized over the vesting period? If the restricted stock units were granted on January 1, 2016, what is the deferred compensation expense related to restricted stock units in 2016? How many shares were forfeited?

d. Are me stock options awards equity or liability classified? How many options were granted in 2016? What is the entry when the grant is made? What is the vesting period? How many options were forfeited and expired? If Pfizer's average stock price during the year was $32.82 per share, can you give a reason why the options expired? What is the compensation expense related to stock options at the end of 2016 Ignore forfeitures.