Which of the below is not a valid design pattern?

What is a JavaBean in Java?

A. A reusable software component that follows specific conventions

B. A type of coffee bean

C. A Java class used for file I/O

D. A Java keyword

Which file extension is commonly used for JavaBean files?

A. `.bean`

B. `.jar`

C. `.class`

D. `.java`

In JavaBeans, what is the purpose of the getter method?

A. To set the value of a property

B. To create a new instance of a bean

C. To retrieve the value of a property

D. To execute a SQL query

What is the role of the `javabeans.Introspector` class in JavaBeans?

A. It represents a JavaBean interface

B. It allows you to examine the properties, events, and methods of a bean

C. It handles database connections

D. None of These