The correct option is
D Side of axillary bud
The buds are classified based on position and arrangement, the secondary buds formed besides a principal bud (axillary or terminal) is called as accessory bud. Accessory buds are of two types:
Lateral to axillary buds is known as collateral buds. For example- Lilies.
Above axillary buds is known as superposed buds. For example-
Aristolochia.Thus, the correct answer is option D.