The Last 6 Years of Sales Are Provided in the Table

Multiple Choice

The last 6 years of sales are provided in the table below. Compute the 3-year moving average for 2019.
$$\begin{array} { | l | l | l | l | l | l | } \hline \text { Year } & 2014 & 2015 & 2016 & 2017 & 2018 \\\hline \text { Sales } & 8 & 10 & 11 & 10 & 12 \\\hline\end{array}$$

A) 10
B) 10.2
C) 11
D) 11.2