Anomalies

[neha.patni]

It was anomalies in the orbit of Uranus that led to the discovery of Neptune.

(A) It was anomalies in the orbit of Uranus that
(B) It was the orbit of Uranus showing anomalies that
(C) They were anomalies in the orbit of Uranus that
(D) The orbit of Uranus being anomalous was what
(E) The anomalies in the orbit of Uranus was what

OA Later

[kvcpk]

IMO A

[indiantiger]

It is x that led to y

A

[neha.patni]

It is x that led to y

A

OA A

But my confusion is that anomalies is plural, why we have used "is" here. Is "is" not the verb for anomalies?