题目内容：
Based on the description of a lahar deposit, how do clasts and matrix particles differ in size?
A.Any clast is larger than the largest matrix particle.
B.Any clast is smaller than the smallest matrix particle.
C.Some, but not all, clasts are smaller than the largest matrix particle.
D.Some, but not all, matrix particles are larger than the smallest clast.
参考答案：