alleryMatch pass side-fx: 1. Prim: p. Unchanged 2. Obj: q. Field edit 3. Ref: r. Local slot
A1-p, 2-q, 3-r
B1-p, 2-r, 3-q
C1-q, 2-p, 3-r
D1-r, 2-p, 3-q
Answer & Solution
Correct answer: A. 1-p, 2-q, 3-r
Passing primitive values shields caller variables from alteration, passing object references permits mutating object fields, but rebinding references stays local.
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