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Directions: In the following questions read the passages carefully and choose the best answer to each question out of the four alternatives. Today perhaps your only association with the word 'polio' is the Sabin Oral Vaccine that protects children from the disease. Fifty-five years ago, this was not so. The dreaded disease, which mainly affects the brain and the spinal cord, causes stiffening and weakening of the muscles crippling and paralysis, which is why I am in a wheelchair today. If somebody had predicted, when I was born, that this would happen to me, no one would have believed it. I was the seventh child in a family of four pairs of brothers and sisters, with a huge 23 yr gap between the first and the last. I was told that, unlike the others, I was so fair and brown- haired that I looked more like a foreigner than a Dawood Bohri. I was also considered to be the healthiest of the brood.

Polio, the dreaded disease, mainly affects the

A) heart and spinal cord

B)        brain and spinal cord

C) brain and nerves

D)       brain and heart