A. 1,3-dimethoxypropane (CH₃OCH₂)₂CH₂

B. 2,2-dimethoxypropane (CH₃)₂C(OCH₃)₂

C. diethoxymethane CH₂(OC₂H₅)₂

To help identify each compound and properly label its container ¹³C and ¹H nmr spectra have been taken.
The following questions refer to this experimental data.

What prediction can be made regarding the number of ¹³C nmr signals expected from these compounds?
(Select one of the following)
All three compounds will have a different number of ¹³C nmr peaks. .............
Two of these compounds will have the same number of ¹³C nmr peaks. .......
All three of these compounds will have the same number of ¹³C nmr peaks. ...

Which if any of the ¹H nmr spectra of these compounds would fit the following criteria?
(Enter A, B, Cor Xfor none)
1.Which would not show any spin-spin splitting? ..
2.Which would show a 4H quartet at δ3.5 ppm? ...
3.Which would show a 2H quintet at δ1.7 ppm? ...