The correct option is A A-2, B-5, C-4, D-3, E-1
Spikes - un-branched racemose inflorescence e.g., Malabar nut and chaff flowers.
Catkin - a cylindrical flower cluster e.g., hazel, oak, mulberry, sweet chestnut, willow and birch .
Panicle - branched indeterminate racemose inflorescence with pedicellate flowers e.g., grapes.
Hypanthodium - inflorescence with three types of flowers - male flowers at the opening of the receptacle cavity, female flowers at the base and gall flowers (sterile flowers) in between. e.g., Ficus.
Rhipidium - A type of determinate simple inflorescence called as cymose, in this form of scorpoid cyme, the successive pedicels are on the same plane and follow a zig-zag path e.g., Iridaceae.