Normally, the Period from January Through June of the Year

Normally, the period from January through June of the year of a presidential election is referred to as the nomination campaign. What occurs during this period?

A) The candidates declare their intention to seek the office of president.
B) All campaign funds are required to be expended.
C) Primary elections are held in each state to determine the number of delegates each candidate will be allowed to send to the nominating convention.
D) The electoral college meets to cast their formal votes.
E) The nationwide vote is held and the next president is chosen.