In Nuclear Magnetic Resonance,stronger Magnetic Fields

In nuclear magnetic resonance,stronger magnetic fields

A) give a higher sensitivity spectrum than do lower magnetic fields.
B) give different chemical shifts (in ppm) than would weaker magnets.
C) give better separation between peaks in the spectrum (in Hz) than would weaker magnets.
D) give different coupling constants than would be observed with weaker magnetic fields.
E) Both A and C are true.