The top of an offshore oil rig has an elevation of 199.2 meters and its base has an elevation of -9.6 meters. An observation deck is
located at an elevation equal to 1/6 of the total height of the oit rig. A helipad is located 22.8 meters above the observation deck. What
is the elevation of the helipad?
A.56 meters
B. 52 meters
C. 57.6 meters
D. 54.4 meters