次のうち6785になるのはどれ？A. (6 × 1000) + (8 × 100) + (7 × 10) + (5× 1)B. (6 × 1000) + (7 × 100) + (3 × 10) + (8 × 1)C. (7 × 1000) + (6 × 100) + (8 × 10) + (5 × 1)D. (6 × 1000) + (7 × 100) + (8 × 10) + (5 × 1)