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Qus_______ method converts all uppercase characters to lowercase and vice versa of the given string, and returns it. Qus____मेथड सभी अपरकेस कैरेक्टरो को दिए गए स्ट्रिंग के लोअरकेस और इसके विपरीत में परिवर्तित करती है, और इसे रिटर्न कर देती है ।


A. swapcase
B. uppertolower()
C. lowertoUpper()
D. None of these


Solution
A. swapcase



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