The resistance of a metallic wire_x005F_x000D_

• A. directly proportional to its length and inversely proportional to its area of cross-section.
• B. inversely proportional to the product of its area of cross-section and length
• C. inversely proportional to its length and directly proportional to its area of cross-section
• D. directly proportional to the product of its area of cross-section and length