Village Corp., a calendar year corporation, began business in year 1. Village made a valid S corporation election on December 5, year 4, with the unanimous consent of its shareholders. The eligibility requirements for S status continued to be met throughout year 5. On what date did Village's S status become effective?

a. January 1, year 4

b. January 1, year 5 

c. December 5, year 4

d. December 5, year 5