Cho hình chóp\(S.ABC\), gọi \(G\) là trọng tâm tam giác\(ABC\). Ta có:

A. \(\overrightarrow{SA}+\overrightarrow{SB}+\overrightarrow{SC}=3\overrightarrow{SG}\)

B. \(\overrightarrow{SA}+\overrightarrow{SB}+\overrightarrow{SC}=\overrightarrow{SG}\)

C. \(\overrightarrow{SA}+\overrightarrow{SB}+\overrightarrow{SC}=4\overrightarrow{SG}\)

D.  \(\overrightarrow{SA}+\overrightarrow{SB}+\overrightarrow{SC}=2\overrightarrow{SG}\)