1310 - Analytical Reasoning

Correct Answer: A

Explanation:

1. • Floor 6: None
   • Floor 5:(M) O
   • Floor 4:(O) M
   • Floor 3: N
   • Floor 2: None
   • Floor 1: L
2. • Floor 6: (M) O
   • Floor 5:(O) M
   • Floor 4: None
   • Floor 3: N
   • Floor 2: None
   • Floor 1: L
3. • Floor 6: (M) O
   • Floor 5:(O) M
   • Floor 4: N
   • Floor 3: None
   • Floor 2: L
   • Floor 1: None
4. • Floor 6: None
   • Floor 5: N
   • Floor 4: None
   • Floor 3: N
   • Floor 2: (M) O
   • Floor 1: (O) M
5. • Floor 6: N
   • Floor 5: None
   • Floor 4: L
   • Floor 3: (M) O
   • Floor 2: (O) M
   • Floor 1: None
6. • Floor 6: N
   • Floor 5: None
   • Floor 4: L
   • Floor 3: None
   • Floor 2: (M) O
   • Floor 1: (O) M

In the question, configuration 3 is the only appropriate configuration. In this case, we can see from this configuration that floor 1 must be vacant.