1. Which technology among the following is most distinct from the other three

A. Efficient micropayments

B. Lightening

C. Payment channel

D. Casper

2.Efficient micropayments as introduced in our class involves all below except for

A. Multi-signature transactions

B. Proof of burn

C. Time-locked transactions

D.Multiple potential double spends off the blockchain

It doesn't need to add more infotmation because the Q1 and 2 are not related