Consider the Expected Splitting of the C2 Proton Signal in the ¹H

Consider the expected splitting of the C2 proton signal in the ¹H NMR spectrum of 2-ethyl-1,3-propanediol.Presuming that the coupling constants for neighboring protons are sufficiently different,and that the instrument has sufficient resolving power,what is the theoretical multiplicity of the C2 proton signal?

A) 6
B) 7
C) 8
D) 12
E) 15