Occupying a significant part of modern-day Nigeria, the Kingdom of Benin was one of the major powers in West Africa between the thirteenth and nineteenth centuries. It ______ ruled by Oba Ewuare I from 1440 to 1473.

Which choice completes the text so that it conforms to the conventions of Standard English?
Choose 1 answer:
Choose 1 answer:
(Choice A) will be
A
will be
(Choice B) is
B
is
(Choice C) was
C
was
(Choice D) has been
D
has been