Which two multicast 

Which two multicast address ranges are assigned as source-specific multicast destination addresses and are reserved for use by source-specific applications and protocols？（）

• A232.0.0.0/8
• B239.0.0.0/8
• C232.0.0.0/4
• DFF3x：：/32
• EFF2x：：/32
• FFF3x：：/16