निम्नलिखित में से कौन सा मोबाइल ऑपरेटिंग सिस्टम नहीं है?
Which of the following is not a mobile operating system?
A)
B)
C)
D)
Explanation:
The correct answer is Mac OS, as it is an operating system for computers (specifically Apple's computers) and not a mobile operating system.
So, the correct answer is:
(B) Mac OS