Which one of the following @Function to all "response"and "response to response"documents of parent documents?（） A: @Responses B: @AllChildren C: @AllResponses D: @AllDescendants&e

Which one of the following @Function to all "response"and "response to response"documents of parent documents?（） A: @Responses       B: @AllChildren     C: @AllResponses   D: @AllDescendants