Answer :
wireless payments from mobile devices.
Explanation:
Now the trend is cashless. Everybody has smart phones and people are willing to pay through various money transfer application. So according to the given situation Vice president should choose wireless payments from mobile devices.
Option A: Correct answer
Option B: Social media application can only be used to promote product and not payment so far.
Option C: Desktop will still be present since it is not only mobile apps that is existing. May are using websites for payment
Option D & E: invalid choice.