Drinking 6 fluid ounces of milk provides 202.5 milligrams of calcium. How many fluid ounces of milk are required to provide 52.5 milligrams of calcium? Round to the nearest tenth.
A. 2.1 fluid ounces
B. 2.3 fluid ounces
C. 1.8 fluid ounces
D. 1.6 fluid ounces