What is the result of the following code in Java?
Integer a = 100;
int b = a;

A. The automatic conversion of primitive types to their corresponding wrapper classes B. The process of creating a new box C. A feature for manually converting wrapper classes to primitive types D. A feature for boxing objects

A. `char` B. `boolean` C. `float` D. `int`

A. It improves memory management B. It reduces code complexity C. It simplifies code by automatically converting between primitive types and their corresponding wrapper classes D. It speeds up code execution

A. Exception classes (e.g., `RuntimeException`) B. Wrapper classes (e.g., `Integer`, `Double`) C. Collection classes (e.g., `ArrayList`, `HashMap`) D. None of These