Which of the following is an assumption on which the argument depends? A. The company's methods of measuring the size of the oil deposit were determined by a third party to be more accurate than those used by the prospector. B. The prospector did not purposefully fabricate or misrepresent the size of the oil deposit. C. Though smaller than originally thought, the oil deposit contained enough oil to make drilling commercially feasible. D. The prospector did not explore other oil fields and use the same methods to determine the magnitude of the oil present, if any. E. The company had successfully drilled for oil in other large oil fields in Texas throughout the early twentieth century.