Select all correct statements about the Probing and clustering issue

For quadratic probing, even though primary clustering can be avoided, secondary clustering may still occur

"Primary clustering" refers to that there is a cluster $($e$.$g$.,$ a consecutive slots$)$ in Hash table that keys are inserted to$.$

For quadratic probing, if load factor $\backslash (\backslash$lambda $\backslash$leq $1/2\backslash )$ and TableSize as a prime number, then we can always insert a new data into the hash table

If we can guarantee load factor $\backslash (\backslash$lambda $\backslash$leq $1/2\backslash ),$ then secondary clustering is avoided