Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D.

Options

A. `{:(A,B,C,D),("Nitrification","Ammonification","Animal","Plants"):}`
B. `{:(A,B,C,D),("Denitrification","Ammonification","Plants","Animals"):}`
C. `{:(A,B,C,D),("Nitrification","Denitrification","Animals","Plants"):}`
D. `{:(A,B,C,D),("Denitrification","Nitrification","Plants","Animals"):}`

Answer

B