The Acetylcholine Receptor Is an Example of A(n) _______ Receptor

The acetylcholine receptor is an example of a(n) _______ receptor, the insulin receptor an example of a(n) _______ receptor, and the epinephrine receptor an example of a(n) _______ receptor.

A) G protein-linked; protein kinase; ion channel
B) ion channel; protein kinase; G protein-linked
C) ion channel; G protein-linked; protein kinase
D) protein kinase; ion channel; G protein-linked
E) protein kinase; G protein-linked; ion channel