单项选择题

A. <allow verbs="GET" users="*" /><deny verbs="POST" users="*" /><allow verbs="POST"roles="Administrators" />
B. <allow role s="Administrators" /><deny users="*" />
C. <allow users="Administrators" /><allow users="*" />
D. <allow verbs ="POST" roles="Administrators" /><deny verbs="POST" users="*" /><allow verbs="GET" users="*" />