(4) Given L = {w
{a, b}*:
x
{a, b}+ (w = axa)}. The correct statements are:
Group of answer choices
L is the set of strings over the alphabet {a, b} that start and end with a.
L is the set of strings over the alphabet {a, b} that start and end with a whose length is at least 3.
L is the set of strings composed of 3 or more a's.
is in L.
aba, aaa are in L.
aaa, aaaa, aaaaaa are in L.
aa is in L.