ANS:B - ohms

The unit of resistance is the Ohm.

Quantity ---------- Unit ---------- Abbrev.
Resistance ---------- Ohm ---------- R.
Inductive ---------- Ohm ---------- XL.
Capacitive ---------- Ohm ---------- XC.
Inductance ---------- Henry ---------- H.
Capacitance ---------- farad ---------- F.
Frequency ---------- hertz ---------- HZ.