The assertion and reason are true, but the reason does not correctly explain the assertion.
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
Assertion (A) states that the sale of one's ancestral house does not constitute a business, which is true as not all transactions fall under the business category.
On the other hand, Reason (R) claims that one single sale transaction forms a business, which is not entirely correct as a single transaction may not encompass the entirety of a business operation.
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