Consider the code segment below.

• Line 1: IF (a=0)
• {
•   b ← a + 10
• }
• ELSE
• {
•   b ← a + 20
• }

Which of the following changes will NOT affect the results when the code segment is executed?

Line 3 will only execute if a = 0. Therefore, a will always equal 0 for line 3.