Given below is a simplified model of phos- phorus cycling in a terrestrial ecosystem with four blanks (1 - 4). Identify the blanks

Options

A. `{:(A,B,C,D),("Rock minerals","Detritus","Litter fall","Producers"):}`
B. `{:(A,B,C,D),("Litter fall","Producers","Rock minerals","Detritus"):}`
C. `{:(A,B,C,D),("Detritus","Rock minerals","Producer","Litter fall"):}`
D. `{:(A,B,C,D),("Producers","Litter fall","Rock minerlas","Detritus"):}`