Task
📝 **Task:** Print a letter grade for a score.
📋 **Steps:**
1. `score = 85` is already set
2. Use an `if/elif/else` chain to determine the letter:
- `score >= 90` → `"A"`
- `score >= 80` → `"B"`
- `score >= 70` → `"C"`
- else → `"F"`
3. Print the letter
💡 **Similar example (age → category):**
```python
age = 15
if age < 13:
print("kid")
elif age < 18:
print("teen")
elif age < 65:
print("adult")
else:
print("senior")
```
⚠️ **Hint:** `elif` is checked only if the previous `if` was False. Order matters!
🎯 **Expected output:** `B`