The Following Data Occurs Chronologically from Left to Right $$\begin{array} { | l | l | l | l | l | l | } \hline 15.2 & 19.7 & 16.0 & 11.1 & 14.8 & 14.5 \\\hline\end{array}$$

Multiple Choice

The following data occurs chronologically from left to right: $$\begin{array} { | l | l | l | l | l | l | } \hline 15.2 & 19.7 & 16.0 & 11.1 & 14.8 & 14.5 \\\hline\end{array}$$
The number of runs up and down is:

A) 2.
B) 3.
C) 4.
D) 5.
E) none of these.