Let W = {(0,x,y, z): x- 6y + 9z = 0} be a subspace of R. Then a basis for W is: {(0,6,1,0), (0,9,0,1)} {(0,3,1,0), (0,9,0,1)} O (0,6,1,0), (0,9,0,1) None of the mentioned

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