Which of the following is/are correct?

A. Guru Nanak was thoroughly familiar with the politico administrative arrangements made by the Afghan rulers particularly in the Punjab.

B. Babur's invading army in the eyes of Guru Nanak was a 'marriage party of sin'.

C. Guru Nanak was not interested in the contemporary religious beliefs and practice whether Hindu or Muslim.

D. It was Guru Nanak's conviction that God has no caste.

E. Guru Nanak considered ritual reading of scriptures as waste of time.

Choose the most appropriate answer from the options given below: