Differences between Value types and Reference types
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Value type variables are stored on stack. Reference type variables are stored on heap.
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Value type holds the data directly, Reference type points to the location that holds the data.
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Value type cannot contain null value. Reference type can contain null value.
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A new type cannot be derived from value type. A new type can be derived from reference type.
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All of the above
Value types and reference types differ in multiple ways: storage location (stack vs heap), data handling (direct vs pointer), nullability (value types cannot be null), and inheritance (value types are sealed). All options A-D are correct differences, making option E the right answer.
Every one of the listed statements is a true distinction between value types and reference types: value types live on the stack and hold their data directly while reference types live on the heap and store a pointer to the data; value types (outside of Nullable) can't be null while reference types can; and value types are sealed so you can't derive new types from them, whereas reference types support inheritance. Since all four statements are individually correct, 'All of the above' is the right choice.