The correct option is D A (iv), B (iii), B (i), D (ii)
Br - stands for 'bracteate' which means the flowers have bracts.
K - stands for 'calyx' or the whorl containing sepals.
C - stands for 'corolla' or the whorl containing petals.
P - stands for 'perianth' or an outer layer of the flower composed for fused sepals and petals.