The growing of coffee beans in South America is done in a time-honored but also time-consuming fashion. A new method of growing coffee beans, tried while introducing the growing of coffee beans to new regions in Africa, is much less time-consuming. A group of entrepreneurs has decided to employ farmers in South America, seasoned in the art of coffee bean growing, while applying the new method. The entrepreneurs believe that using the new method will significantly shorten the growing time and, therefore, reduce the growing costs within the first year.
Which of the following, if true, would most weaken the conclusion drawn by the group of entrepreneurs?
A. It will always cost more money to grow coffee beans in South America than in Africa due to the difference in employee wages.
B. When introduced to regions in Africa where coffee had never been grown, a farming crew was assembled within a fortnight and the new method was inculcated surprisingly quickly.
C. The more the farmer is used to an agricultural method, the longer it takes that farmer to internalize and efficiently use another.
D. A third method, already used in certain parts of the Caribbean, has been shown to be more efficient and cost effective than the proposed African method.
E. In some regions in Africa, organizing consistent sources of irrigation is problematic.