Let $ABCDEF$ be a regular hexagon with the vertices $A, B, C, D, E$ and $F$ in counter-clockwise order. Then,the vector $\vec{AB} + \vec{BC}$ is parallel to:
- A$\vec{BC} + \vec{CD}$
- B$\vec{CD} + \vec{DE}$
- C$\vec{AF} + \vec{FE}$
- D$\vec{FE} + \vec{ED}$
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