If $F_1$ and $F_2$ are two vectors of equal magnitudes $F$ such that $|F_1 \cdot F_2| = |F_1 \times F_2|$,then $|F_1 + F_2|$ is equal to

  • A
    $\sqrt{2+\sqrt{2}} F$
  • B
    $2 F$
  • C
    $F \sqrt{2}$
  • D
    None of these

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