Даны два множества \(X = \{-3, 15, 28, 40, 50\}\), \(Y = \{6, 15, 22, 40, 50\}\). Укажи элементы множества \(X \cup Y\).

• \(\{-3, 6, 22, 28\}\)
• \(\{-3, 6, 15, 22, 28, 40, 50\}\)
• \(\{15, 40, 50\}\)