Read the following statements regarding the structure of DNA  and mark the appropriate option.

i) A DNA molecule is made of two polynucleotide chains with anti parallel polarity and both strands are  coiled in a  right-handed fashion.

ii) In each poly nucleotide strand, two consecutive nucleotides are linked through 3'-5' phosphodiester linkage .

iii)   A polymer thus formed has at one end a free phosphate moiety at 5'-end of sugar, referred to as 5’-end of polynucleotide chain. Similarly at the other end of the polymer the sugar has a free OH of 3'C  group which is referred to as 3' -end of the polynucleotide chain. 

(iv) the backbone of each strand constituted by sugar-phosphate, and the bases project inside