3 questions minimum 200 words per question need them ASAP (5hrs)

Answer the following questions in 200 to 300 words:

 

o    Name and describe various categories of e-commerce.

 

o    Compare and contrast electronic payment systems. Which type do you use most often? Which type is most applicable for organizations you interact with regularly?

 

o    Explain how Internet technology supports business-to-business e-commerce.

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