The datadg disk group contains four disks. A 100 MB volume named test is striped across
two disks with a stripe unit size of 4K. The following vxtrace output was generated:
START write vdev test block 115392 len 64 concurrency 1 pid 6948
3602 START write disk c1t8d0s2 op 3601 block 57696 len 8
3603 START write disk c1t9d0s2 op 3601 block 57696 len 8
3604 START write disk c1t8d0s2 op 3601 block 57704 len 8
3605 START write disk c1t9d0s2 op 3601 block 57704 len 8
3606 START write disk c1t8d0s2 op 3601 block 57712 len 8
3607 START write disk c1t9d0s2 op 3601 block 57712 len 8
3608 START write disk c1t8d0s2 op 3601 block 57720 len 8
3609 START write disk c1t9d0s2 op 3601 block 57720 len 8
3602 END write disk c1t8d0s2 op 3601 block 57696 len 8 time 0
3603 END write disk c1t9d0s2 op 3601 block 57696 len 8 time 0
3604 END write disk c1t8d0s2 op 3601 block 57704 len 8 time 1
3606 END write disk c1t8d0s2 op 3601 block 57712 len 8 time 1 3608
END write disk c1t8d0s2 op 3601 block 57720 len 8 time 1 3605
END write disk c1t9d0s2 op 3601 block 57704 len 8 time 1 3607
END write disk c1t9d0s2 op 3601 block 57712 len 8 time 1 3609
END write disk c1t9d0s2 op 3601 block 57720 len 8 time 1 3601
END write vdev test op 3601 block 115392 len 64 time 1
Assume one block is equivalent to 512 bytes. (Solaris-style disk names are not relevant.)
How many writes did Volume Manager perform to each disk?

A.
One

B.
Two

C.
Four

D.
Eight