Answer:
Computer has making human life faster because of its incredible speed,Accuracy and storage, with which human can save anything and search it out easily when needed. We can say computer a versatile machine because it is very flexible in performing their jobs.
Person A, of course. This person is the original maker of the image therefore that person has the rights to that image, person B does not automatically become the owner just by using it on his website. So the answer is person A.
To present something infront of a crowd