Which three attributes need to be defined with values in the <apex:page> tag to accomplish this?

A platform developer at Universal Containers needs to create a custom button for the Account object that, when clicked, will perform a series of calculations and redirect the user to a custom Visualforce page.

Which three attributes need to be defined with values in the <apex:page> tag to accomplish this? (Choose three.)
A . action
B . renderAs
C . standardController
D . readOnly
E . extensions

View Answer

Answer: ABC