You placed four radio buttons on a web form. You want the users to specify
whether they are male or female and whether they are married or single. The code
is as follows:
Male: <input type="radio" checked="checked" name="chk" value="male" />
Female: <input type="radio" name="chk" value="female" />
Married: <input type="radio" checked="checked" name="chk" value="married" />
Single: <input type="radio" name="chk" value="single" />
What is wrong with the above code?

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