Where, in relation to the cabinet, should they be placed?

To guarantee proper cooling, you plan to place perforated floor tiles near your Database Machine.
Where, in relation to the cabinet, should they be placed?

A.
On the left side, because the air flow is from left to right

B.
At the back, because the air flow is from back to front

C.
On the right side, because the air flow is from right to left.

D.
At the front, because the air flow is from front to back

E.
Underneath the cabinet, because the air flow is from bottom to top

Explanation:
Airflow must be front-to-back.

Reference: Oracle White Paper,ORACLE Exadata DatabaseMachine X3-8