Keel is characteristic of the flowers of

Consider the following four statement A, B, C, and D select the right option for two correct statements.

(A) In vexillary aestivation the large posterior petal is called standard, two lateral ones are wings and two small anterior petals are termed keel.

(B) The floral formula for Liliaceae is 

(C) In pea flower the stamens are monoadelphous.

(D) The floral formula for Solanaceae is 

The correct statements are