要想链接样式正常显示，链接的四个伪类应该按照如下顺序依次定义。（） A: a:linka:visiteda:hovera:active B: a:linka:hovera:activea:visited C: a:linka:hovera:visited a:active D: a:activea:linka:visiteda:hover

Linka Company has a total of five departments, namely, the R&D department, the finance department, the sales department, the production department and the HR department.