Example of a questionnaire with summation of points

This example of a questionnaire illustrates specification of buttons with points to be summed.

Notice that questions in this example are lettered rather than numbered.

A. Your age (how old are you?):
under 20 years
between 20 og 50
> 50 years

B. How do you feel about rock music?
I love it!
once in a while I like to listen to it
it's horrible!
what is it? (never heard of it)

C. Your opinion on this questionnaire survey:
When ready click checkbox and then button:    
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Your identification (optional, for print only)