The correct option is A Spadix
A spadix is a spike of flowers densely arranged around it, enclosed or accompanied by a highly specialized colored bract called a spathe. It is characteristic of the family Araceae.
The family Poaceae has a peculiar inflorescence of small spikes (spikelets) organized in panicles or spikes that are usually simply and improperly referred to as spike and panicle.
Hypanthodium is a special type of cymose inflorescence. The Hypanthodium inflorescence is found in the genus Ficus of the family Moraceae, e.g., Banyan (Ficus benghalensis), Peepal (Ficus religiosa), and Fig (Ficus carica).
In cymose type of inflorescence the main axis terminates in a flower, hence is limited in growth. The flowers are borne in a basipetal order.
So, the correct answer is "option B"