Consider the language L$=($a$*+$b$)*.$ Which of the following grammar depicts the language

L$?$

a$)$ S $->$ aS $|$ S$1$E

b$)$ S $->$ AB $|$ E$,$ A $->$a$,$ B $->=$ b

c$)$ S $->$ ASBE, B bbB

d$)$ None of the above$$