The correct options are
C Subabul can be grown in farm lands which is easy to procure.
D Bamboo is not easily available.
Although raw materials for paper are available in the forests, it is not very easily procured. Paper mills engage contractors to supply bamboo and other raw materials. Due to excessive cutting in the past, there are no bamboos available in forests near the paper mills now. Hence, paper mills are looking for alternative raw materials like subabul which are grown in villages.