Which statements repairs the corrupted blocks?

You have a mounted mirrored btrfs file system in RAID-1 on /btrfs:
# btrfs filesystem show
Label: ‘Btrfs’uuid:7bfe3239-47ee-442b-b9f8-49f88b6b1 be4 Total devices 2 FS bytes used 250.46MB devid 2 size 4.88GB used 1 54GB path /dev/sdd devid 1 size 4.88GB used 1.54GB path /dev/sdc

You found an error on one device:
#btrfs scrub start -B -d -r /btrfs scrub device /dev/sdc (id 1) done
scrub started at Wed Aug 21 15:33:05 2013 and finished after 6 seconds total bytes scrubbed: 250.34MB with 0 errors scrub device /dev/sdd (id2) done
scrub started at Wed Aug 21 15:33:05 2013 and finished after 6 seconds total bytes scrubbed: 250.39MB with 26 errors error details: read=13 csum=13
corrected errors: 13, uncorrectable errors: 0, unverified errors: 0

Which statements repairs the corrupted blocks?

A.
fsck.btrfs -f /dev/sdd

B.
fsck -t btrfs /btrfs

C.
btrfs scrub/dev/sdc

D.
btrfs scrub start /dev/sdd