alleryMatch scope nest: 1. Close: p. Keep env 2. Inner: q. Sub-func 3. Outer: r. Non-local
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
A closure retains the variable environment of its enclosing context, where inner nested routines access non-local outer variables.
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