This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Dyskeratosis means 
Select and explain. 
A. Abnormal,premature keratinization within cells  below  the stratum granulosum, B. Discontinuity  of the  skin showing incomplete loss of epidermis, C. Thickening   of stratum corneum, often associated with a  qualitative  abnormality of keratin, D. Keratinization with retained nuclei in the stratum corneum
A: Abnormal,premature keratinization within cells  below  the stratum granulosum
Answer: A: Abnormal,premature keratinization within cells  below  the stratum granulosum 
Explanation: Abnormal,premature keratinization within cells  below the stratum granulosum-Dyskeratosis.
Discontinuity of the  skin showing incomplete loss of epidermis-Erosion.
Thickening of stratum corneum, often associated with a qualitative abnormality of keratin-Hyperkeratosis.
Keratinization with retained nuclei in the stratum corneum.-Parakeratosis.