Xác định các lựa chọn khác nhau. Tính lợi nhuận tiềm năng của mỗi lựa chọn. Chọn phương án tốt nhất. Tính chi phí cơ hội.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
When faced with a choice between two options, calculate the potential returns of both options.  Since you can only choose one option, you forfeit the potential returns from the other option.  That loss is your opportunity cost.  For example, suppose your company has $100,000 in extra funds, and you have to decide between investing in securities or purchasing new capital equipment. If you decide to invest in the securities, you may see a return on that investment.  But, you forfeit any profit you