Q8. Which one of the options is the regular expression for the following NFA construction? M (a) r = (a + bb)* (ba* + 1) (b) r = (a + bb)* )* (ba*l + 1) (c) r = (a + bb) (ba* + 1) (a) r = (a + bb)* (ba + 1)* (d) None of the above