Question number $1.$

Give the differential equation that has $y=C_1+C_2{x}^4-3xas$ its general solution.

$A,x{y}^{\text{'}}-3y=9$

$,x{y}^{\text{'}\text{'}}+3y^{\text{'}}=-9$

$x{y}^{\text{'}\text{'}}+5y^{\text{'}}=9$

$x{y}^{\text{'}\text{'}}-3y^{\text{'}}=-15$

$E,x{y}^{\text{'}\text{'}}-3y^{\text{'}}=9$

$F$ None $of$ the above.