Nitrogen, the main element contributing to the growth of plants in vitro and in-vivo is the constituent of

A. Amino acids
B. Certain hormones
C. Co-facter of many enzymes
D. Chlorophyll
E. In storage and transfer of energy in plants

Choose the most appropriate answer from the options given below :

A

A, B, and C only

B

A, B, and D only

C

B, C, and D only

D

C, D, E only