Which of the following statements are correct :

I. China is the leading coal producer of the World

II. Donetsk Basin is the major coal producing region in Ukraine

III. Saar Region is the major coal producing area in Germany

IV. The major coal mining areas of the USA lie in the Appalachian Region

Select the correct answer from the code given below :

Code :

U.P.P.C.S. (Pre) 1999