Identify the development origin of TWO of the following tissues in vertebrates.
1- Central Nervous System
2-Digestive System
3-Muscle

A. A: Ectoderm, B: Endoderm
B. A: Endoderm, B: Mesoderm
C. A: Mesoderm, B: Ectoderm
D. A: Endoderm, B: Ectoderm