X is the outermost whorl of the flower and contains Y. Y is green, leaf like and protect the other whorls of the flower. Identify X and Y.

A. X - Calyx; Y - Sepals

B. X - Corolla; Y - Petals

C. X - Gynoecium; Y - Fruit

D. X - Androecium; Y - Ovary

Please do not use chat terms. Example: avoid using "grt" instead of "great".