Statement (A) is incorrect because in the double helix model of DNA, the two strands run in opposite directions (antiparallel). One strand runs in the 5′→3′ direction, while the other runs in the 3′→5′ direction. Therefore, they do not have parallel polarity.

Statement (B) is correct. The pitch of the DNA helix is 3.4 nm, which represents one complete turn of the helix. In this length, approximately 10 base pairs are present, making the spacing between consecutive base pairs about 0.34 nm.

Statement (C) is correct because DNA follows complementary base pairing. Adenine pairs with thymine (A–T) and guanine pairs with cytosine (G–C). Due to this specific pairing, if the sequence of one strand is known, the exact sequence of the complementary strand can be determined.

Statement (D) is incorrect. In prokaryotic cells, DNA is not randomly scattered; it is localized in a distinct region called the nucleoid. Although this region is not surrounded by a membrane, the DNA is still organized rather than dispersed throughout the cell.