A. client.navName 
B. navigator.appName 
C. browser.name 

A. open.new("http://www.w3school.com.cn","window2") 
B. new.window("http://www.w3school.com.cn","window2") 
C. new("http://www.w3school.com.cn","window2") 
D. window.open("http://www.w3school.com.cn","window2")