The correct option is D Mango
Mango is not a false fruit. The true fruits are defined as fruits formed from ovary tissue. Ovary holds ovules inside and after fertilization the ovary turns into fruit and ovules turn into seeds. Many times we see that some attractive fruits which are not developed from the ovary but from other floral tissue such as thalamus, these fruits are false fruits. Mango is a true fruit as it is formed from the ovary of the flower.
Thus, the correct answer is option D.