讲义中哪里提到瑞典是双层董事会结构？

问题如下：

One difference between the corporate governance practices in Japan and those in Sweden relates to the:

选项：

A.prevalence of single-tier versus two-tier boards. B.requirement for appointing independent audit firms. C.dominance of major shareholders in leading companies.

解释：

A is correct. In Sweden, a Scandinavian country, most board structures are two-tier, whereby supervisory and management boards are separate and responsible for different functions. In Japan, statutory auditors and single-tier boards prevail. In both countries, there is a tendency for dominance by major shareholders in leading companies rather than having more diversified ownership of companies with many smaller shareholders. Independent audit firms are a requirement for companies in both countries.