Read the following statements and choose the correct option.
(i) In phenylketonuria the affected person does not secrete the enzyme to convert phenylalanine to tyrosine.
(ii) The possibility of a male becoming haemophilic is extremely rare.
(iii) Sickle cell anemia is caused by the substitution of glutamic acid by valine at the fifth position of beta chain of haemoglobin molecule.
(iv) Myotonic dystrophy is an autosomal dominant trait.

Options

A. (i) and (ii) alone are wrong.
B. (ii) and (iii) alone are wrong.
C. (ii) alone is wrong.
D. (ii) and (iv) alone are wrong.

Answer

B