In the fingerprint region of the IR spectrum, what do the absorptions at 746 and 688 cm-1 tell you about the substitution pattern of this compound?
a. It is disubstituted aromatic ring with the substituents ortho to each other.
b. It is a monosubstituted aromatic ring.
c. It is disubstituted with the substituents meta to each other.
d. Peaks in the fingerprint region are unimportant and do not provide much detail concerning this compound.