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# If the lines $x^2+2xy-35y^2-4x+44y-12=0$ and $5x+\lambda y-8=0$ are concurrent, then the value of $\lambda$ is

$\begin {array} {1 1} (a)\;0 & \quad (b)\;1 \\ (c)\;-1 & \quad (d)\;2 \end {array}$

(d) 2