To answer this question, you need to understand the different types of software testing.
Let's go through each option to understand why it is correct or incorrect:
Option A) Component testing - This option is a valid test type. Component testing focuses on testing individual components or modules of a software system to ensure that they function correctly.
Option B) Functional testing - This option is a valid test type. Functional testing involves testing the functionality of the software system to ensure that it meets the specified requirements.
Option C) System testing - This option is a valid test type. System testing involves testing the entire software system as a whole to ensure that all components work together correctly.
Option D) Acceptance testing - This option is a valid test type. Acceptance testing involves testing the software system to determine whether or not it meets the requirements and is ready for deployment.
The correct answer is B) Functional testing. This option is correct because functional testing is a common and important type of software testing that focuses on testing the functionality of the system.