The answer is B. 1 dekagram (dkg) = 10 grams. Therefore, 105.6 milligrams = 0.01056 dkg. This is deduced by first converting the milligrams to grams; 105.6/1000 = 0.1056 g;
Then convert to dkg; 0.1056g/10 = 0.01056dkg
The other SI units;
1000 millligrams = 1 gram
1000000 milligrams = 1 kg