This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Histopathological findings, Subject name: Dental
Spongiosis involves: 
Select and explain. 
A. Stratum granulosum, B. Stratum corneum, C. Stratum spinosum, D. Stratum basale
C: Stratum spinosum
Answer: C: Stratum spinosum 
Explanation: Spongiosis :extracellular accumulation of fluid in stratum spinosum. Eg: Acute eczema Ballooning: intracellular accumulation of fluid in stratum spinosum.Eg: Acute eczema Acanthosis :thickening of stratum spinosum. Eg: Chronic eczema