Read the given statements and mark the correct option. Statement 1: While fixing a metal rim on a wooden wheel of a cart, the size of the metal rim is kept slightly smaller than that of the wooden wheel. Statement 2: Metals expand on heating and contract on cooling.

• A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
• B. Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
• C. Statement 1 is true and statement 2 is false.
• D. Both statements 1 and 2 are false.