Which of the following is the most accurate statement regarding ethics as applied to decision making in accounting?（ ）
选项：

A:Ethics involves making difficult choices under pressure and should be kept in mind in making every decision, including those involving accounting.
B:It is impossible to learn ethical decision making, since it is just something you decide to do or not to do.
C:Ethics has no place in accounting, since accounting deals purely with numbers.
D:Ethics is becoming less and less important as a field of study in business.