Comparison effect: refers to the phenomenon of the mutual influence of some relevant economic subjects or interest subjects in social and economic activities in the distribution of benefits, and the advancement in turn. which of the following are comparison effects? ['Company employees compare their wages with each other and ask the company to adjust their wages.', 'Two middle school students secretly compete, study hard, and become the first.', 'friends are often smarter than whose children.', "Through a field visit, Company A found that Company B's management was more scientific."]