Which of the following statements about nucleosome is true?

$\mathrm{A}$: Composition of cell membrane of Erythrocyte
$\mathrm{B}$: No. of strands present in peripheral fibril of centriole
$\mathrm{C}$: No. of nucleotides in a typical nucleosome

$\mathrm{I})$ $60\%$ protein, $40\%$ Lipids
$\mathrm{II})$ $52\%$ protein, $40\%$ Lipids
$\mathrm{III})$  Phosphoglycolipids
$\mathrm{IV}) 3$
$\mathrm{V}) 200$
$\mathrm{VI}) 145$

Select the option that correctly matches $\mathrm{A}, \mathrm{B} \mathrm{and} \mathrm{C}$ respectively with $\mathrm{I}-\mathrm{VI}$.

Give appropriate biological or technical terms for the following:

The complex consists of a DNA strand and a core of histones.

What is a solenoid? Can you determine the North and South poles of a current-carrying solenoid with the help of a bar magnet? Explain.