Consider the following statements about Sikhs Gurus
1. Banda Bahadur was appointed as a military leader of the Sikhs by Guru Teg Bahadur
2. Guru Arjun Dev became the Sikh Guru after Guru Ram Das
3. Guru Angad/Anga Dev gave the Sikhs their own script Gurumukhi
Which of the statements given above is / are correct ?