GMAT Sentence Correction (SC) | Re: Jerrod was advised by his lawyer that he should have better told the t

from the gmatclub ultimate grammar book
test 2

42. Jerrod was advised by his lawyer thathe should have better told the truth or he could go to jail for a long time.
a) he should have better told the truth or he could go
b) telling the truth should be done since he could go
c) Jerrod might ought to tell the truth for not going
d) the truth have better be told or he should go
e) Jerrod had better tell the truth or he could go

according to me
C is out because of "might ought to"
D is