The correct option is B Peach
In the flowers of rose, peach, plum, etc. the gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level (perigynous). The ovary is said to be half inferior.
Guava and cucumber are epigynous. Ovary will be inferior in such flowers.
Cotton is hypogynous and the ovary is superior in such flowers.