A normal subgroup is ____________
A. a subgroup under multiplication by the elements of the group
B. an invariant under closure by the elements of that group
C. a monoid with same number of elements of the original group
D. an invariant equipped with conjugation by the elements of original group
Answer:D
A normal subgroup is ____________
A. a subgroup under multiplication by the elements of the group B. an invariant under closure by the elements of that group C. a monoid with same number of elements of the original group D. an invariant equipped with conjugation by the elements of original group