Which of the follwing will return the last $3$ values from the list below?

x $=[1,2,3,\text{'}$a$\text{'},\text{'}$b$\text{'},\text{'}$c$\text{'}]$

x$[-3$:$]$

x$[3$:$]$

x$[$:$-3]$

x$[$:$3]$