Suppose a basket of goods and services has been selected to calculate the consumer price index (CPI) and 2002 has been selected as the base year. In 2002, the basket's cost was $600; in 2004, the basket's cost was $650; and in 2006, the basket's cost was $700. The value of the CPI in 2004 was:___________

a. 92.3.
b. 106.3.
c. 108.3.
d. 152.0.
e. more than 155.0.