Consider the following statement regarding ex-situ bioremediation of contaminated soil :

A. Bioremediation techniques can be applied at or very near the site of contamination.

B. Biopiles and windrow composting are the most dominant ex-situ bioremediation techniques for treating contaminated soils.

C. Biopiles can be formed with larger volumes of soil than windrows.

D. Both biopiles and windrow composting are anaerobic processes.

Choose the correct answer from the options given below :