Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Controlling birds in a spray drying plant is very important, and it can be achieved by installing bird nests on the top floor of the plant.
Reason (R) : A major source of Salmonella contamination is from the fecal droppings of birds, and a zero-tolerance policy has been adopted by FSSAI regulations for dairy products.
In light of the above statements, choose the correct answer from the options given below.