2. In a marathon competition, the stem-and-leaf plot in Figure 1 shows the results (in minutes) of 35 athletes.\\
\includegraphics[max width=\textwidth, alt={}, center]{a0f6867f-5746-4d26-8059-7cd4a91595fe-1_270_969_950_452}
If the athletes are numbered 1-35 according to their results from best to worst, and 7 people are selected using systematic sampling, then the number of athletes with results in the interval [139, 151] is\\
A. 3\\
B. 4\\
C. 5\\
D. 6