La putrescina, un producto de la descomposición de la carne contiene 54.50% de Carbono, 13.72% de Hidrógeno y 31.78% de N A).-C1N2O3
B).-C2H6N
C).-C2H8N3

Ibelieve your answer is true 

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

The disturbance is only parallel to the motion of the wave.