The Table Below Shows Hypothetical Data for Volumes of E-Books

Multiple Choice

The table below shows hypothetical data for volumes of e-books and hardcover books sold over a 3-year period in a particular city.
TABLE 2-3
-Refer to Table 2-3.Suppose we choose Year 1 as the base year and construct a series of index numbers with which to analyze the sales data.The index numbers for volumes of e-books sold (starting with Year 1) is

A) 100; 44.2; 21.7.
B) 100; 226.1; 460.9.
C) 23 000; 52 000; 106 000.
D) 100; 126.1; 360.1.
E) 1; 0.442; 0.217.