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: Dental
Parakeratosis is 
Select and explain. 
A. Premature and abnormal keratinization, B. Increased formation of keratin, C. Nucleated keratinocytes in stratum corneum, D. Elongated rete ridges
C: Nucleated keratinocytes in stratum corneum
Answer: C: Nucleated keratinocytes in stratum corneum 
Explanation: Normally nucleus will be lost in keratinocytes when they reach stratum corneum.
Presence of nucleated keratinocytes in stratum corneum is seen in psoriasis because of decrease in transit time - termed as " parakeratosis"