Which of the following statements correctly reflects the cardinal principle, 'Actus non facit reum nisi mens sit rea' ?
1
Mens rea is an essential element of a crime and there cannot be a crime without mens rea.
2
Criminal liability under Indian law always implies mens rea.
3
To constitute a crime there must be actus reus and mens rea.
4
Actus reus is not always necessary to constitute a crime.