AP EAMCET Medical 2017 Shift 1 Paper

Study the following statements about genetic disorders
(A) Phenylketonuria is caused by a mutation in the gene located on chromosome 12
(B) hi Cooley's Anaemia the beta chain binds to RBC and damage them
(C) Cystic fibrosis causes increased resorption of Na and H2O from respiratory epithelium
(D) Individuals heterozygous to sickle cell trait always lead healthy life
From the above identify the collect statements