Pick out the correct statements.
I. Haemophilia is a sex-linked recessive disease.
II.Down's syndrome is due to aneuploidy.
III. Phenylketonuria is an autosomal recessive gene disorder.
IV. Sickle-cell anaemia is an X - linked recessive gene disorder.

Options

A. II and IV
B. III and IV
C. I, II and III
D. I and IV

Answer

C