An aggregate is said to be flaky, if its least dimension is less than
[ A ] 2/3 mean dimension
[ B ] 3/4 mean dimension
[ C ] 3/5 mean dimension
[ D ] 5/8 mean dimension
[ A ] 2/3 mean dimension
[ B ] 3/4 mean dimension
[ C ] 3/5 mean dimension
[ D ] 5/8 mean dimension