Isolation mass is another key concept in understanding the formation of planetesimals and eventually planets. We sometimes use the term "oligarch" to describe a body which has become isolated. Which of the following statements about isolation mass is false? --

Isolation masses are much higher outside of the ice line

Dynamical friction causes the oligarchs to slow each other down

All of these statements are true

When an object reaches isolation mass it stops growing rapidly by gravitational focusing

Oligarchs get more massive futher out in the disk

Oligarchs are space further and further apart further out in the disk