Match the items in Cloumn-I with those in Cloumn-II and choose the correct the correct answer .
`{:(,,Column-I,,Column-II),(,(P),"Klinefelter syndrome",(i),"Mutation in autosomal gene"),(,(Q),"Thalassaemia",(ii),"Mutation in sex chromosome-linked gene"),(,(R),"Down syndrome",(iii),"Trisomy of autosomes"),(,(S),"Colour blindness",(iv),"Trisomy of sex chromosome"):}`