What is the expected output of the following code? ``python 1 t1 = (1, 4, 9) 2 t2 = ('A', 'D', 'Z') 3 t3 = (True, False, None) 4 t4 = (5.0, 7.5, 9.9) 5 6 t1, t3 = t2, t4 7 print(t1) ``

Question

1 t1 = (1, 4, 9)
2 t2 = ('A', 'D', 'Z')
3 t3 = (True, False, None)
4 t4 = (5.0, 7.5, 9.9)
5 
6 t1, t3 = t2, t4
7 print(t1)

Options

• AThe program will cause an error.
• B(1, 4, 9)
• C('A', 'D', 'Z')
• D(5.0, 7.5, 9.9)

• A
  5% (3)
• B
  2% (1)
• C
  84% (48)
• D
  9% (5)

Explanation

Option C is correct because line 6 uses simultaneous (tuple) assignment: t1, t3 = t2, t4 reassigns t1 to the value of t2 - which is ('A', 'D', 'Z') - so print(t1) outputs that tuple. Option B is the classic trap: it assumes t1 still holds its original value (1, 4, 9), forgetting that line 6 overwrites it. Option D ((5.0, 7.5, 9.9)) is what t3 receives from this assignment, not t1 - it's the right-hand value but paired with the wrong variable. Option A is wrong because simultaneous assignment is perfectly valid Python syntax and raises no error.

Memory tip: In a, b = x, y, Python evaluates the entire right side first, then assigns left-to-right - think of it as "swap in one breath." Whenever you see reassignment before a print, always trace the latest value, not the initial one.

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