Consider the following statements.
A. The identity is unique in any monoid.
B. A monoid is a group if there exists inverse of each element of monoid.
C. Semi group has closure, associative and identity properties.
D. Quasi group has closure property.
Choose the correct answer from the options given below:
1
A, B and D only
2
B, C and D only
3
A, B and C only
4
A, C and D only