Identify the layers of the microsporangium from the inside to the outside.

• A
  Epidermis $\rightarrow$ Middle layers $\rightarrow$ Endothecium $\rightarrow$ Tapetum
• B
  Tapetum $\rightarrow$ Middle layers $\rightarrow$ Endothecium $\rightarrow$ Epidermis
• C
  Tapetum $\rightarrow$ Endothecium $\rightarrow$ Middle layers $\rightarrow$ Epidermis
• D
  Epidermis $\rightarrow$ Endothecium $\rightarrow$ Middle layers $\rightarrow$ Tapetum