Correct answer: Option D — 24 minutes fast. Total gain = rate × elapsed time = 2 × 12 = 24 minutes. Option A (24 minutes slow) is rejected because it does not equal the computed result; it represents a counting, direction, leap-year, interval, or hand-motion error. Option B (22 minutes fast) is rejected because it does not equal the computed result; it represents a counting, direction, leap-year, interval, or hand-motion error. Option C (26 minutes fast) is rejected because it does not equal the computed result; it represents a counting, direction, leap-year, interval, or hand-motion error.