7. The number of values of k for which the system of equations\\
$( \mathrm { k } + 1 ) \mathrm { x } + 8 \mathrm { y } = 4 \mathrm { k }$\\
$\mathrm { kx } + ( \mathrm { k } + 3 ) \mathrm { y } = 3 \mathrm { k } - 1$\\
has infinitely many solution is\\
(A) 0\\
(B) 1\\
(C) 2\\
(D) Infinite\\