What is the correct syntax for calling a controller action from a Visualforce page and updating part of the page once the action is completed? (Choose two.)

What is the correct syntax for calling a controller action from a Visualforce page and updating part of the page once the action is completed? (Choose two.)
A . <apex : commandFunction action=?l { ! Save} " value="Save"
rendered^"thePageBlock"/>
B . <apex: actionFunction action=" { ! Save} " name=!,Save" rerender=l,thePageBlock1’/>
C . <apex:commandButton action="{!Save}" value="Save" redraw="thePageBlock"/>
D . <apex: actionSupport action="{ ISave} " event=llonchange1′ rerender="thePageBlock"/>

Answer: B,D

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