Competitive decision-making refers to the fact that, in the presence of a competing opponent, it is not based on objective natural conditions, but based on the strategy of a competitor. Based on the above definition, which of the following is a competitive decision? ['Due to similar competition, Xiaoli will sell all the stock products at a 70% discount.', 'In order to crack down on the newly opened counterparts, Xiao Liu will sell all products for 3 days below the wholesale price.', 'c. The board of directors of company A is unanimous, and the deputy general manager of company B with which it has a competitive relationship is hired to be the general manager of the company.', 'In order to attract high-quality students, the bonus scholarship amount of School A is always 10% higher than that of School B.']