DNA is
(A) Usually present in tissues as a nucleo protein and cannot be separated from its protein component
(B) A long chain polymer in which the internucleotide linkages are of the diester type between C-3’ and C-5’
(C) Different from RNA since in the latter the internucleotide linkages are between C-2’ and C-5’
(D) Hydrolyzed by weal alkali (pH9 to 100°C)