Largest Annona fruit is borne by

Largest Annona fruit is borne by Annona muricata.
The Annona fruit belongs to Annonaceae, a family of flowering plants consisting of trees, shrubs, or rarely lianas commonly known as the custard apple family or soursop family.
A. muricata, also known as soursop, Graviola and guanabana, is an evergreen plant that is mostly distributed in tropical and subtropical regions of the world. The fruits of A. muricata are extensively used to prepare syrups, candies, beverages, ice creams and shakes.