According to ISO 9126, match List I with List II. List I: (a) Functionality, (b) Reliability, (c) Efficiency, (d) Maintainability. List II: (i) Relationship between level of performance and amount of resources, (ii) Characteristics related to achievement of purpose, (iii) Effort needed to make improvements, (iv) Capability of software to maintain its performance.

1. A(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
2. B(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
3. C(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
4. D(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)

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Correct answer: C. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

Explanation

Functionality is achieving the purpose; reliability is maintaining performance; efficiency relates performance to resources; maintainability is the effort to make changes.