Answer

 
 
     
  Question #3  
 

From external to internal, the layers of the tympanic membrane are derived from:

A. ectoderm, ectoderm, ectoderm

B. ectoderm, endoderm, ectoderm

C. ectoderm, endoderm, endoderm

D. ectoderm, mesenchyme, ectoderm

E. ectoderm, mesenchyme, endoderm