How can i populate my radiobutton from xml?

I have 1 label and 4 radiobutton controls(C#). How can i populate my controls from xml. In label from QuestionText and in radiobutton from Variant,but first question three variant , second question 4 variant.

<Questions><Question QuestionText="2*2"><Variants><Variant>1</Variant><Variant>4</Variant><Variant>5</Variant></Variants><Answers><Answer>4</Answer></Answers></Question><Question QuestionText="3*2"><Variants><Variant>1</Variant><Variant>4</Variant><Variant>5</Variant><Variant>number</Variant></Variants><Answers><Answer>4</Answer><Answer>number</Answer></Answers></Question>