Assertion: $LSD$ and marijuana are clinically used as a analgesics.

Reason: Both these drugs suppress brain function.

Which group of three of the following five statements $(I-V)$ contains is correct regarding beriberi?

$I.$ A crippling disease prevalent among the native population of sub-Sahara Africa.

$II.$ A deficiency disease caused by lack of thiamine (vitamin- $B_{1}$ ).

$III.$ A nutritional disorder in infants and young children when the diet is persistantly deficient in essential protein.

$IV.$ Occurs in those countries where the staple diet is polished rice.

$V.$ The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.

HIV causes reduction in

The pathogen Mircosporum responsible for ringworm disease in humans belongs to

Social therapy of mental illness is required for