Which of the phrases given below the sentence should replace the phrase printed in bold type to make it grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.
The train will leave at 8.30 pm, we have been ready by 7.30pm so that, we can reach the station in time.
were
must be
are
should have
No correction required
Correct answer is B
No explanation has been provided for this answer.