Question: Suppose that L and M are two regular languages. Which of the following statements about their concatenation are true ( pick THREE ) : It

Suppose that L and M are two regular languages. Which of the following statements about their concatenation are true
(
pick THREE
)
:
It may be the case that LM
=
ML
If M is empty then LM is also empty
It is not true in general that LM is the same as ML
LM is never the same as ML

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