Guru Nanak Dev Ji believed in Sach Khand. What is Sach Khand?
A) It is the mental condition in which the difference of happiness and sadness, man and woman, hope and disappointment, laughing and crying, high and low is removed.
B) It is the physical condition of the human body devoid of any diseases.
C) It is the physical condition of the human body full of diseases.
D) Speaking truth all the time.