How Often Does the Basket of Goods in the Consumer

How often does the basket of goods in the consumer price index change?

A) occasionally, as does the basket of goods used to compute the GDP deflator
B) yearly, as does the basket of goods used to compute the GDP deflator
C) occasionally, while the basket of goods used to compute the GDP deflator changes yearly
D) yearly, while the basket of goods used to compute the GDP deflator changes occasionally