The answer to your question is,
A. 7 large buckets and 3 small buckets.
So, a large bucket has 25 that can fit and a small fits 13. Take 214 and divide it by 25. You'd get a decimal number. 8.56. You see, you can't overfill the 8th bucket by another clam, so you would have to downsize it to where the crabs would fit, so that means 8 buckets. Alongside the rest goes into the small buckets.
-Mabel <3
