The correct options are
A Wood is collected from trees.
B Logs are covered with mud and grass, and lit up.
C Logs that are lit up turn into charcoal.
D The end product is coal, which is sold to factories.
Given the unpredictability of agriculture in Salakamcheruvu, some residents have turned to other means of livelihood like coal batties (kilns). First, wood is collected from trees. The logs are covered with mud and grass, and then lit up. This lit up pile turns into charcoal and this is sold to factories. This entire process takes around two months.