Answer: Hello!
A second order differential equation has the next shape:

where p(t), q(t) and g(t) are functions of t, that can be constant numbers for example.
And is called homogeneus when g(t) = 0, so you have:

Then a second order differential equation is homogeneus ef every term involve either y or the derivatives of y.
Left over is 456 minus total of A+B+C
456-334=122
C d are equal so 122/2=61
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Answer:
The answer is B. 
Step-by-step explanation:
Because 
So the answer in this question is B.