The Chemical Shift $\delta$ , Is Independent of the NMR Instrument Used, Since It

Multiple Choice

The chemical shift, $\delta$ , is independent of the NMR instrument used, since it is defined as a ratio of frequencies. Choose all statements that are true regarding the chemical shift, $\delta$ .
I. The chemical shift, $\delta$ , is a characteristic of the electronic environment that the atoms are in.
II. The chemical shift of the H in tetramethylsilane (TMS) is set 0 ppm as a reference.
III. Compounds containing a single type of hydrogen atom will show only one peak in the H-NMR spectrum.
IV. The chemical shift, $\delta$ is increasing left to right on an NMR spectrum.

A) I and II
B) I, II and III
C) II and IV
D) III and IV
E) All of the above