The equation $2x^2+3y^2-8x-18y+35=k$ represents

Question

$\begin{array}{1 1}(A)\;\text{no locus if k >0} \\(B)\;\text{an ellipse if k <0 } \\(C)\;\text{ a point if k=0} \\(D)\;\text{a hyperbola if k >0} \end{array}$