Specimen B – Fruit. Probably non edible. Initially thought it was a poorly grown apple.
Specimen C – Fruit. Edible unknown. Should have taken home a sample.
Specimen D – Fruit. Again, i should have plucked one home to dissect!
There is also the wild mango variety called quinine which looks very similar to your supermarket mangoes, usually green and emits extra pungent mango scent when ripe. Usually very sweet and fibrous. I have a picture of it from a village orchard but can’t seem to locate it for this post.