[Rails] Radio_button_tag syntaxis with more parameters

Hi to everybody!

I have a view with a radio-button: I need to pass 2 parameters
("opt.id" and "opt.option") to the relative action;
as for the following code I 've used, I find in params[:option_id]
only the id of the selected option...
How can I do to pass also "opt.option"?

<% for opt in @options %>
<p>
<%= label_tag(:answer, opt.option) %>
<%= radio_button_tag(:option_id, opt.id, false) %>
</p>
<% end %>

Thank's to all those who can help me!!!

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