Explanation : Statistical software quality assurance in software engineering involves tracing each defect to its underlying cause, isolating the vital few causes, and moving to correct them. So, option (C) is correct.
Explanation : Alpha testing is conducted at the developer’s site by a team of highly skilled testers for software that is developed as a product to be used by many customers. Statement about white box testing and black box testing are not correct. Only last statement is correct. So, option (A) is correct.