With a magnetic field strength of 1.41 tesla in NMR spectroscopy, all of the protons in organic compounds will resonate over a narrow range of frequencies near 60 MHz. With a magnetic field strength of 7.04 tesla, all of the protons in organic compounds will resonate over a range of frequencies near 300 MHz. Select the answer from the options below:
a. 240 MHz
b. 250 MHz
c. 280 MHz
d. 300 MHz