In an imaginary economy, consumers buy only hot dogs and hamburgers. The fixed basket consists of 10 hot dogs and 6 hamburgers. A hot dog cost $3 in 2006 and $5.40 in 2007. A hamburger cost $5 in 2006 and $6 in 2007. Which of the following statements is correct?
选项：

A:When 2006 is chosen as the base year, the consumer price index is 90 in 2007;
B:When 2006 is chosen as the base year, the inflation rate is 150 percent in 2007;
C:When 2007 is chosen as the base year, the consumer price index is 100 in 2006;
D:When 2007 is chosen as the base year, the inflation rate is 50 percent in 2007