An Engineer Is Using REST API Calls to Configure the Cisco

An engineer is using REST API calls to configure the Cisco APIC. Which data structure must be used within a POST message to receive a login token?

A) {"aaaUser":{"attributes":{"name":"apiuser","pwd":"cisco123"}}}
B) <aaaUser><name="apiuser"/><pwd="cisco123"/></aaaUser>
C) {aaaUser:{attributes:{name:apiuser,pwd:cisco123}}}
D) <aaaUser><name>apiuser</name><pwd>cisco123</pwd></aaaUser>