In the context of software design patterns, what does the Singleton pattern ensure?

سافٹ ویئر ڈیزائن پیٹرن کے تناظر میں، سنگلٹن پیٹرن کیا یقینی بناتا ہے؟

A class can be subclassed only once

A class has only one instance and provides a global point of access to it

A class can be instantiated only once per thread

None of these

The Singleton pattern ensures that a class has only one instance throughout the application.

It provides a global point of access to that single instance.

It preventing the creation of additional instances.