Which of the following sedimentary features would typically be found in shales but not in sandstones?

Question

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Mud cracks are a feature commonly found in shales, which are fine-grained sedimentary rocks made up of clay-sized particles. Sandstones, on the other hand, are composed of coarser grains and are typically deposited in high-energy environments where mud cracks are not likely to form. Cross stratification, ripple marks, and bedding can all be found in sandstones, as well as other types of sedimentary rocks.

Which of the Following Sedimentary Features Would Typically Be Found