Option(C) is correct because wheat is not a plantation crop. Plantation crops are usually grown for profits. Wheat is a principal crop and worldwide staple food. It is grown on about 220 million hectares worldwide, covering more land area than any crop.

Option (A) is not correct because coffee is a plantation crop. It is traditionally grown in the Western Ghats. Now it is grown in Karnataka, Kerala and Tamil nadu. It is an export product with high employment content.

Option (B) is not correct because sugarcane is a plantation crop. It is grown in sub tropical and tropical areas. It is mainly cultivated for sugar but it is also grown for bio fuel production.

Option (D) is not correct because rubber is a plantation crop. It is an important commercial product grown in Thailand, Malaysia and Indonesia. Rubber is used for making tires, mattresses etc.