Read the following statement s and choose the correct option
In p[henylketonuria the affected person does not secrete the enzyme to con vert pheylalnine to typrosine
(II)Possibility of male becoming haemophiliac is extremely rare
(III) Sickle cell anaemia is caused by the substitution of glutamic acid by valine at fifth position of beta chain of haemoglobin
(IV) Myotonic dystrophy is an autosomla 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