Supercoiled $DNA$ can be traced in

In $B-DNA$,one full turn of the helical strand contains

Nucleotides are linked by

Which complementary base pairing is present in the structure of $DNA$?

Identify the correct features of $DNA$ from the following statements:
$(i)$ It is made of two polynucleotide chains.
(ii) The backbone is constituted by sugar and phosphate.
(iii) The two chains have anti-parallel polarity.
(iv) The bases in the two strands are linked through $H$-bonds.
$(v)$ Both chains are coiled in a right-handed fashion.

The given diagram represents: