- A20
- B9
- C11
- D10
Step-by-Step Solution
End of day 1: 0 + 4 = 4. Night 1: 4 - 1 = 3. Day 2: 3 + 4 = 7. Night 2: 7 - 1 = 6. Day 3: 6 + 4 = 10.
Answer: D) 10
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