Solve the Differential Equation Using the Method of Undetermined Coefficients $$y ^ { tt } - 5 y ^ { t } = \sin 15 x$$

Multiple Choice

Solve the differential equation using the method of undetermined coefficients.
$$y ^ { tt } - 5 y ^ { t } = \sin 15 x$$

A)
$y ( x ) = c _ { 1 } e ^ { 5 x } + \frac { 1 } { 250 } \cos ( 6 x ) + \frac { 1 } { 750 } \sin ( 6 x )$
B)
$y ( x ) = c _ { 1 } + c _ { 2 } e ^ { 5 x } + \frac { 1 } { 750 } \cos ( 6 x ) - \frac { 1 } { 250 } \sin ( 6 x )$
C)
$y ( x ) = c _ { 1 } + c _ { 2 } e ^ { 5 x } - \frac { 1 } { 250 } \sin ( 6 x )$
D)
$y ( x ) = c _ { 1 } e ^ { 5 x } + \frac { 1 } { 750 } \cos ( 6 x ) - \frac { 1 } { 250 } \sin ( 6 x )$
E)
$y ( x ) = \frac { 1 } { 750 } \cos ( 6 x ) - \frac { 1 } { 250 } \sin ( 6 x )$