panic/recover 2

ماذا يطبع البرنامج التالي؟

package main

func main() {
	defer func() {
		println(recover().(int))
	}()
	defer func() {
		defer func() {
			recover()
		}()
		defer recover()
		panic(3)
	}()
	defer func() {
		defer func() {
			defer func() {
				recover()
			}()
		}()
		defer recover()
		panic(2)
	}()
	panic(1)
}

الخيارات:

• 1
• 2
• 3