A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: B
Solution :
The cysticercus larva of Echinococcus is the most harmful stage. In live or lung and in a few cases in brain, heart, bone, kidney etc., the larva develops into a watery bladder or hydatid vesicle or hydatid cyst, having a two layered cyst wall. The cyst produces, by asexual budding, exogenous and endogenous buds containing brood chambers. A hydatid cyst may grow upto football size in 12 to 20 years in man, necessiating surgery. Large hydatid cyst cause inflammation, diarrhoea, abdominal pains, vomiting, eosinophilia etc. Presence of cysts in brain, eye or kidney may prove fatal.
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