Which of the folowing statements is $($are$)$ correct?

Select one or more alternatives

$[4$ marks$]$

LSM$-$tree is ideal for write$-$intensive applications because it extensively engages sequential

writing.

RAID can speed up data read by introducing redundancy, which wil slow down the data

writing.

LSM$-$tree is better than B$-$tree in searching efficiency.

Data stored in columns $($column store$)$ cannot use B$-$tree to speed up searching