What is the only difference between Double hashing and linear probing?

The only difference is the interval between successive probes. Linear probing uses multiple hashing functions to compute the interval between probes.

The only difference is the interval between successive probes. Double hashing uses multiple hashing functions to compute the interval between probes.

The only difference is the interval between alternative probes. Linear probing uses multiple hashing functions to compute the interval between probes.

$$ None of the options