What are the benefits of tilting the layered steps? ( ) A: Easy to separate mining of ore and rock and improve ore quality B: Convenient for transportation equipment operation C: Convenient for mining equipment operation D: Ease of layering

Which is the right layered order of epidermis?() A: Stratum basale; Stratum spinosum; Stratum lucidum; Stratum granulosum; Stratum corneum B: Stratum basale; Stratum granulosum; Stratum spinosum; Stratum lucidum; Stratum corneum C: Stratum basale; Stratum lucidum; Stratum spinosum; Stratum granulosum; Stratum corneum D: Stratum basale; Stratum spinosum; Stratum granulosum; Stratum lucidum; Stratum corneum E: Stratum basale; Stratum corneum; Stratum granulosum; Stratum lucidum; Stratum spinosum