Wrought iron contains carbon upto A. 0.25% B. 1.0% C. 1.5% D. 2.0%

The correct answer is A. 0.25%.

Wrought iron is a type of iron that is very pure, with a carbon content of less than 0.25%. It is made by repeatedly heating and hammering iron until the impurities are removed. Wrought iron is very strong and ductile, and it is used in a variety of applications, including making nails, chains, and other hardware.

Option B is incorrect because wrought iron does not contain more than 0.25% carbon. Option C is incorrect because wrought iron does not contain more than 1.5% carbon. Option D is incorrect because wrought iron does not contain more than 2.0% carbon.