Concerns were raised over the short supply of a class of elements called 'rare earth metals'. Why ? 1. China, which is the largest producer of these elements, has imposed some restrictions on their export. 2. These elements are not found in any other country except China, Australia, Canada and Chile. 3. Rare earth metals are essential in the manufacture of various types of electronic goods and the demand for these elements is increasing. Which of the above statement(s) is/are correct?

• A. only 1
• B. 2 and 3
• C. 1 and 3
• D. all these