A typical 120240V distribution transformer requires three wi

A typical 120/240-V distribution transformer requires three wires for the primary circuit. two wires for the secondary circuit. two wires and a neutral wire for the secondary circuit. four wires for each 120-V secondary circuit.

Solution

Primary is three phase so three phases(240) are connected to priamry side

and secondary side 4 wires will come 3 phases (120V) and one neutral

So the answer is (A)