Binding a SwiftUI Picker selection to an ObservedObject's @published var

PickerSelectionTestView.swift

import SwiftUI

class MyData: ObservableObject {
    // TIL: the type cannot be optional.
    // If the selection type is optional, then the option in the UI & property here won't be binded.
    @Published var selectedOption: String = "Option 2"
}

struct PickerSelectionTestView: View {
    @ObservedObject var data = MyData()
    
    let options = ["Option 1", "Option 2", "Option 3"]
    
    var body: some View {
        VStack {
            Picker("Select an option", selection: $data.selectedOption) {
                ForEach(options, id: \.self) {
                    Text($0)
                }
            }
        }
    }
}

#Preview {
    PickerSelectionTestView()
}