In a typical complete, bisexual and hypogynous flower the arrangement of floral whorls on the thalamus from the outermost to the innermost is
A. Calyx, corolla, androcium and gynoecium
B. Calyx, corolla, gynoecium, corolla and calyx
C. Gynoecium, endroecium, corolla and calyx
D. Androcium, gynoecium corolla and calyx