To perform a write operation to a single data block B in a RAID level $4$ system with n data disks and $1$ parity disk, select the list of I$/$O operations that would satisfy the requirements. $($Symbol represents the XOR operation.$)$

Group of answer choices

$1.$ Read the old parity block Q and $($n$-1)$ data blocks of the stripe$$

$2.$ New parity P $=$ Q$($n$-1)$ data blocks of stripe

$3.$ Write new data block B

$4.$ Write new parity block P

$1.$ Read the old parity block Q

$2.$ New parity P $=$ B$$Q

$3.$ Write new data block B

$4.$ Write new parity block P

$1.$ Read the other $($n$-1)$ blocks of the stripe

$2.$ New parity P $=$of all the n data blocks $($including the new block being updated$)$

$3.$ Write new data block B

$4.$ Write new parity block P

None of the above.