What is the difference between IAT hooking and inline hooking?

Question $244$ options:

IAT hooking is used for persistence, while inline hooking is used for privilege escalation

IAT hooking is used for kernel$-$level rootkits, while inline hooking is used for user$-$level rootkits

IAT hooking modifies the import address table, while inline hooking modifies the actual function code

IAT hooking is more difficult to detect than inline hooking