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If $(1, 5, 35)$, $(7, 5, 5)$, $(1, \lambda, 7)$ and $(2\lambda, 1, 2)$ are coplanar, then the sum of all possible values of $\lambda$ is:
(1) $-\frac{44}{5}$
(2) $\frac{39}{5}$
(3) $-\frac{39}{5}$
(4) $\frac{44}{5}$
BETA
