Which of the following could be used to pass an object to a block method?

A.
option method=nsetFoo”>
<bar module=”some/string” />
</action>

B.
<action method=”setFoo”>
<bar helper=”some/other/string” />
</action>

C.
<action method=”setFoo”>
<bar>
<bar module=”some/string” />
</bar>
</action>

D.
It is not possible to pass an object to a block method via layout XML.