Multiple choice questions: "The end of the year" means the last day of the year, which refers to ()?

New Year's Eve is one of the most significant of China's traditional festivals. It refers to the evening of the last day of the year on the lunar calendar, the evening before the Spring Festival, and is also known as New Year's Eve because it often falls on the thirtieth or twenty-ninth day of the waxing moon on the summer calendar. The last day of the year is called "New Year's Eve", and that night is called "New Year's Eve". New Year's Eve people often stay up all night, called the New Year's Eve.