In the split window mode, one title bar looks darker than the other, because [RBI Grade B 2012]

darker title bar shows unavailable window

darker title bar shows window not in use

darker title bar shows active window

In the split window mode, one title bar looks darker than the other, b

1.	In the split window mode, one title bar looks darker than the other, because [RBI Grade B 2012]
A.	darker title bar shows window not in use
B.	darker title bar shows active window
C.	darker title bar shows unavailable window
D.	Both a and b
Answer» C. darker title bar shows unavailable window