Data class

You have the following snippet of code:

data class Floor(val area: Int, val building: String, val numberOfRooms: Int) {
    override fun equals(other: Any?): Boolean {
        return other is Floor && building == other.building && 
        area == other.area && numberOfRooms == other.numberOfRooms
    }
}

Also, you have the following output:

false
true
false

Choose the correct main() functions for the given output:

1) fun main() {
    val first = Floor(140, "University", 4)
    val second = Floor(140, "University", 4)
    val third = Floor(140, "University", 4)
    println(first == second)
    println(first == third)
    println(second == third)
}

2) fun main() {
    val first = Floor(140, "University", 4)
    val second = Floor(150, "University", 4)
    val third = Floor(140, "University", 4)
    println(first == second)
    println(first == third)
    println(second == third)
}

3) fun main() {
    val first = Floor(140, "Universyty", 4)
    val second = Floor(140, "University", 3)
    val third = Floor(140, "Universyty", 4)
    println(first == second)
    println(first == third)
    println(second == third)
}

4) fun main() {
    val first = Floor(140, "Unversity", 4)
    val second = Floor(140, "Unversity", 4)
    val third = Floor(140, "Unversity", 4)
    println(first == second)
    println(first == third)
    println(second == third)
}