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.

• A

  $I, II\; and \;IV$

• B

  $II, III\; and \;V$

• C

  $I,III \;and \;V$

• D

  $II, IV$ $and$ $\mathrm{V}$