Letters of the word DIRECTOR are arranged in such a way that all the vowels come together. Find out the total no. of ways for making such arrangement. ?

Letters of the word DIRECTOR are arranged in such a way that all th

1.	Letters of the word DIRECTOR are arranged in such a way that all the vowels come together. Find out the total no. of ways for making such arrangement. ?
A.	4320
B.	2720
C.	2160
D.	1120
Answer» D. 1120