<br/><br/>Dear teacher,<br/><br/><br/><br/>I was doing some exercises yesterday and I encountered one question that I do not quite understand. <br/><br/><br/><br/>John claims that he is the first Taiwanese….Salsa on the local TV.<br/><br/><br/><br/>A. of dancing<br/><br/>B. who dances<br/><br/>C. to dance<br/><br/>D. that danced <br/><br/><br/><br/><br/><br/>The answer is C. Can somebody kindly explain to me why C is correct, while B and D are not? Thank you so much.