The following symptoms were observed in a bull: 
l. Watery discharged from eyes and nostrils
II. Sore in the mouth and nostrils; 
III. Excessive saliva with offensive odour; 
IV. Sever diarrhoea with blood stand farces.

Which of the following measures would best control the disease?

A.

Deworming animals

B.

Vaccinating animals

C.

Treating animals with antibiotics

D.

Dipping animals

Correct answer is B

No explanation has been provided for this answer.