Which of the following are true of equinoxes?

1. They occur on March 21st and September 23rd
2. They depict equal days and equal nights on March 21st and September 23rd on all places of the earth
3. All places on the earth have equal temperature during equinoxes.
A. 1 and 2 only

B. 2 and 3 only

C. 1 and 3 only

D. 1, 2 and 3

Answer: Option A