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.
He admired the speed with which he completed the work and appreciating the method adopted by him
appreciate the method being adopted
appreciated the method adopted
appreciate the method of adoption
appreciated the method adopting method
No correction required
Correct answer is B
No explanation has been provided for this answer.