What Is the Difference Between Shock Incarceration and Split Sentencing

What is the difference between shock incarceration and split sentencing?

A) in split sentencing, a parole board does the sentencing to probation
B) in shock incarceration, a parole board does the resentencing for probation
C) in split sentencing, the sentencing is all done upfront with no need for later resentencing
D) in shock incarceration, the sentencing is all done upfront with no need for later resentencing