Hawk Corporation purchased 50% of Deacon Corporation's single class of stock on June 1 of this year. They purchased an additional 40% on December 20 of this year. The Sec. 338 election must be made on or before

a. June 30 of this year.

b. November 30 of this year.

c. August 15 of next year.

d. September 15 of next year.