What is aestivation in flowers?

Study the following lists. Match the floral parts given in List - I with the corresponding symbols, in List - II

The correct answer is

Ovaries of four different plants $\mathrm{A},\mathrm{B},\mathrm{C}$ and $\mathrm{D}$ show variation in the position of ovules as stated below
$\mathrm{A})$ On central axis without septa
$\mathrm{B})$ On the inner wall of ovary
$\mathrm{C})$ On the ridge along the ventral suture
$\mathrm{D})$ At the base of the ovary

Identify the $\mathrm{A},\mathrm{B},\mathrm{C}$ and $\mathrm{D}$ plants respectively