Arrange the letters of the word "DARKER" so that the three vowels do not appear together. In how many ways can this be done?

Arrange the letters of the word "DARKER" so that the three vowels do

1.	Arrange the letters of the word "DARKER" so that the three vowels do not appear together. In how many ways can this be done?
A.	240
B.	360
C.	500
D.	720
Answer» B. 360