What is the definition of the word "annual" as it is used in the text?
A. Calculated over the period of one year
B. Calculated over the period of one day
C. Something that almost never happens
D. Something that happens once every 5 years
A. Calculated over the period of one year
B. Calculated over the period of one day
C. Something that almost never happens
D. Something that happens once every 5 years