Adam Snuck Up on a Man Named Bill Who Appeared

Adam snuck up on a man named Bill who appeared to be sleeping on a bench in the park. When Adam grabbed the wallet that was protruding from Bill's hip pocket, Bill woke up. Adam and Bill got into a scuffle that resulted in Bill having a bloody nose. Adam has been charged with robbery which is defined as taking something of value from the immediate presence of a person by force or threat of force. Evidence indicating that Adam intended to steal Bill's wallet:

A) The prosecution has the burden of proof on Adam's intent to take the wallet
B) The defense must establish that Adam had no intent to take the wallet as part of its burden of proof
C) The prosecution has the burden of persuasion on the issue of Adam's intent to take the wallet
D) Once the prosecution introduces evidence showing that Adam intended to take the wallet, the defense has the burden of disproving Adam's intent to take the wallet