[Solved] Identify the error in this code snippet:sealed class BaseClass { public virtual void Execute() { } } class DerivedClass : BaseClass { public override void Execute() { } } | C Sharp (C#)

C Sharp (C#) - Inheritance

Identify the error in this code snippet:

sealed class BaseClass {
    public virtual void Execute() { }
}
class DerivedClass : BaseClass {
    public override void Execute() { }
}

ACannot declare a virtual method in a sealed class

BNo error, code is valid

COverride method must be sealed

DCannot inherit from a sealed class

Step-by-Step Solution

Solution:

Step 1: Understand sealed class behavior
A sealed class cannot be inherited.
Step 2: Check inheritance in code
'DerivedClass' inherits from 'BaseClass' which is sealed, causing a compile-time error.
Final Answer:
Cannot inherit from a sealed class -> Option D
Quick Check:
Sealed classes block inheritance [OK]

Quick Trick: Sealed classes cannot be base classes [OK]

Common Mistakes:

MISTAKES

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