Comprehension Passage
Direction: Questions are based on the following:
There are five persons A, B, C, D, E standing on six steps numbered 1, 2, 3, 4, 5 and 6 from the bottom. At most one person is standing on each step. The step number, on which A is standing, is two less than that of C. Step number on which B is standing is one more than that of D.
If D is standing on step 1, on which step A could be standing?
1
2 or 4 only
2
3 or 5 only
3
3 or 4 only
4
4 or 5 only