The Following Table Shows Data for Total Assets ($ Billion)

The following table shows data for total assets ($ billion) for a small sample of U.S.banks
(late 2013) . $$\begin{array} { | l | c | } \hline { \text { BANK } } & \text { ASSETS (\$ billion) } \\\hline \text { State Street Bank and Trust } & 160.5 \\\hline \text { Discover Bank } & 63.9 \\\hline \text { BancWest } & 72.8 \\\hline \text { Citizens Bank } & 130.0 \\\hline \text { Northern Trust } & 83.8 \\\hline \text { Huntington Bank } & 53.8 \\\hline \text { Key Bank } & 91.8 \\\hline \text { People's United } & 27.9 \\\hline\end{array}$$
The mean for the total assets data ($ billion) is

A) $78.3.
B) $56.3.
C) $85.6.
D) $120.5.
E) $42.4.