Aniline, o-nitroaniline, m-nitroaniline, p-nitroaniline. Correct basicity order of the given amines is:
A. Aniline > o-nitroaniline > m-nitroaniline > p-nitroaniline
B. Aniline > p-nitroaniline > m-nitroaniline > o-nitroaniline
C. p-nitroaniline > m-nitroaniline > o-nitroaniline > Aniline
D. p-nitroaniline > o-nitroaniline > m-nitroaniline > Aniline