Multiple Choice questions

I am attempting to put two different types of questions on the same page. The true/false works well giving immediate feedback, however, with Multiple Choice where there is a choice of 3 answers (all correct) I am only getting feedback if I tick all 3. I want to get feedback if only one or two answers are ticked (in which case the answer is incorrect). If I tick one answer only I don't get immediate feedback to tell me that the answer is incorrect. What am I doing wrong?I am attempting to put two different types of questions on the same page. The true/false works well giving immediate feedback, however, with Multiple Choice where there is a choice of 3 answers (all correct) I am only getting feedback if I tick all 3. I want to get feedback if only one or two answers are ticked (in which case the answer is incorrect). If I tick one answer only I don't get immediate feedback to tell me that the answer is incorrect. What am I doing wrong?

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