How to scale the viewC correctly in size and position as it follow the viewB ?

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Create UIViewA
        let viewA = UIView(frame: CGRect(x: 0, y: 0, width: 500, height: 500))
        viewA.backgroundColor = .red
        self.view.addSubview(viewA)

        // Create UIViewB
        let viewB = UIView(frame: CGRect(x: 150, y: 150, width: 200, height: 200))
        viewB.backgroundColor = .green
        viewA.addSubview(viewB)
        
        // Create UIViewC
        let viewC = UIView(frame: CGRect(x: -50, y: viewB.bounds.midY, width: 200, height: 50))
        viewC.backgroundColor = .blue
        viewB.addSubview(viewC)
        
        let originalOrigin = viewB.frame.origin
        
        // Scaling
        viewB.bounds.size = .init(width: 400, height: 400)
        viewB.frame.origin = originalOrigin
        
        // How to scale viewC size and position correctly ?
    }
}

I am expecting the the viewC to be like scaling correctly.