In which phase(s) will the lipophilic MCS precursor be predominantly found after the extraction step?
The MCS precursor will:

A. be found in the aqueous layer.
B. be found in the tert-butyl methyl ether layer.
C. be distributed equally between the aqueous layer and the tert-butyl methyl ether layer.
D. form a precipitate between the aqueous and tert-butyl methyl ether layers.