Select the word, which means the same as the group of words given.'A fortress typically on high ground above a city.'

Select the word, which means the same as the group of words given.'A f

1.	Select the word, which means the same as the group of words given.'A fortress typically on high ground above a city.'
A.	Palace
B.	Colossus
C.	Tower
D.	Citadel
Answer» E.