Which of the Following Is True in Regard to the Processing

 Which of the following is true in regard to the processing of cane into sugar by slaves?

A) The sugar cane was pressed to obtain the sugar liquid.
B) Cane was planted year-round and involved a continuous agro-industrial organized system of processing.
C) Large copper kettles were used to boil down the liquid to sugar.
D) The harvesting,planting,and processing of cane to sugar required strenuous work by slaves.
E) All of the answers are correct.