Which of the following is not true regarding 1H NMR spectroscopy?
A) "shielding" leads to peaks at lower values of d
B) a "downfield" peak appears at a higher value of d
C) d for a particular proton depends on the magnetic field strength of the instrument used.
D) on a 300 MHz instrument, a proton that adsorbs irradiation at a frequency 1200 Hz higher than the adsorption of TMS appears at d 4 ppm.
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