One of the Concerns During the War Against Iraq Several

One of the concerns during the war against Iraq several years ago was fear of chemical warfare agents, such as the nerve agent VX. VX is the most dangerous material ever synthesized; a single drop of VX on the skin will kill an individual within hours. More than 2 million pounds of VX were made in Southern Indiana by 1968. They are still there, stored in 1600 canisters, packed three high. The canisters were welded together several years ago because of fear of exposure to VX if a tornado struck the storage facility. Elemental analysis of VX gives the following result: 49.41% C, 9.80% H, 5.24% N, 11.97% O, 11.58% P, and 11.99% S. How many carbon atoms does the empirical formula for this compound contain?
(Hint: Carry out the calculation to at least three significant figures.)

A) 3 or less atoms
B) 4 to 7 atoms
C) 8 to 11 atoms
D) 12 to 15 atoms
E) more than 15 atoms