在Eudemon防火墙中，查看当前的会话表项总数量，可以用如下哪个命令？
Adisplay firewall statistic system normal
Bdisplay firewall statistic system
Cdisplay firewall session normal
Ddisplay firewall session table
Adisplay firewall statistic system normal
Bdisplay firewall statistic system
Cdisplay firewall session normal
Ddisplay firewall session table