Consider Singhal$-$Kshemkalyani$$s differential vector clocks technique discussed in class. Which of the following statements is TRUE?

$[$Select ALL that apply$]$

Group of answer choices

Each process needs to maintain two vectors of size n $($where n is the number of processes in the execution$)$

The technique becomes inefficient if many entries of the sender$\text{'}$s vector clock change between successive messages to the same receiver

The technique needs to send only the differences in vector clocks between successive messages from the same sender to the same receiver

The technique works efficiently if one or two entries of the sender$\text{'}$s vector clock change between successive messages to the same receiver