The solutions of the second-order DDE $x^{2} \frac{d^{2} y}{d x^{2}}-3 x \frac{d y}{d x}=0$ s Select one $$ \begin{array}{1} y=c_{1}+c_{2} e^{3 x} \ \text { b. ) y=c_{1}+c_{2} X^{3} \end{array} $$ c Nonegf these $$ y=9 X+92 x^{4} $$ CS.VS.13711