Which of the following statements regarding Build & Fix Model is wrong?

A. No room for structured design
B. Code soon becomes unfixable & unchangeable
C. Maintenance is practically not possible
D. It scales up well to large projects
✅ The correct answer is option D.
Explanation: Build & Fix Model is suitable for 100-200 LOC

Which two models doesn’t allow defining requirements early in the cycle?

A. Waterfall & RAD
B. Prototyping & Spiral
C. Prototyping & RAD
D. Waterfall & Spiral
✅ The correct answer is option B.
Explanation: Prototyping Model starts with a requirements analysis phase including techniques like FAST, QFD, Brainstorming.In case of Spiral model the first phase involves activities related to customer communication like determining objectives.