Identify the Variable Identify the Variable Under Consideration in the First Column

Multiple Choice

Identify the variable.
-For the year 2006 , a large record company reported the following sales figures for various music media. $\begin{array}{l|l}\text { Media } & \text { Sales (\$ millions) } \\\hline \text { CD } & 1477.3 \\\text { CD single } & 1.8 \\\text { MP3 } & 65.9 \\\text { Vinyl } & 2.6 \\\text { Music video } & 531.4 \\\text { Mini Disc } & 0.3 \\\text { DVD } & 108.2 \\\text { Cassette } & 3.4\end{array}$

Identify the variable under consideration in the first column?

A) media type
B) 1477.3
C) CD
D) sales