The correct option is B Cymbopogon citratus
Cymbopogon citratus, commonly known as lemon grass or oil grass. It is a tropical plant from Southeast Asia. Cymbopogon citratus is abundant in the Philippines and Indonesia, where it is known as tanglad or sereh. It's fragrant leaves are traditionally used in cooking, particularly for lechon and roasted chicken. Lemon grass oil is obtained from Cymbopogon citratus. Thus, option B is correct.