I'll give you a question, please answer with step-by-step reasoning process. The spoiled child's playroom was massive, but only one of many rooms in the what?
Options:
- big house
- nursery school
- preschool
- building
- retirement home

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
A big house has many rooms. Massive rooms can be found in a big house. Big house can have a child's playroom.
The answer: big house.