When calling an AJAX or REST operation from a coach view, the parameters of the call’s argument must be in which format?

When calling an AJAX or REST operation from a coach view, the parameters of the call’s argument must be in which format?
A . A stringified XML object
B . A serialized JSON object
C . A native ISO 8601 object
D . A Plain Old Java Object (POJO)

Answer: B

Explanation:

Reference: http://www.ibm.com/support/knowledgecenter/SSFPJS_8.5.0/com.ibm.wbpm.wle.editor.doc/ develop/topics/tajaxservice.html