Select the option that expresses the given sentence in active voice.
Walking zones have been demarcated using paints and cones by the municipal corporation.
1
Walking zones are demarcating the municipal corporation using paints and cones.
2
The municipal corporation is demarcating walking zones using paints and cones.
3
The municipal corporation has demarcated walking zones using paints and cones.
4
The municipal corporation will demarcate walking zones using paints and cones.