What is the first step in the construction of a line perpendicular to and passing through an external point M? Assume that the construction uses only a compass and a straightedge.

"Place the compass needle on M and, keeping the compass width the same, draw two arcs that intersect AB" is the first step in the construction of a line perpendicular to AB←→ and passing through an external point M. The correct option among all the options that are given in the question is the first option or option "A".