Which of the following is/are correct statements regarding beri-beri? (i) A crippling disease prevalant among the native population of sub-Saharan 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 persistently deficient in essential protein. (iv) Occurs in those countries where the staple diet is polished rice. (v) The symptoms are pain, paralysis, muscle, cramps, progressive oedema, mental deterioration and finally heart failure.

• A. (i), (ii) and (v)    
• B.                    (i), (ii) and (iv)
• C. (i), (iii) and (v)   
• D.                    (ii), (iii) and (v)