The correct option is C Hypanthodium inflorescence
Immature gular fruit is a hypanthodium inflorescence. Hypanthodium inflorescence is formed by an enlarged, fleshy, hollow receptacle with multiple ovaries on the inside surface. In essence, it is really a fleshy stem with a number of flowers, so, it is considered both a multiple and accessory fruit. Here, the receptacle is fleshy and forms hollow ball like structure with an apical opening. Three types of flowers develop on the inner surface of the receptacle.The female flowers are towards the base, male flowers are towards the orifice and short styled sterile female flowers are in between.