I will be running three new circuits to a kitchen. Two will serve two double duplex above countertopo outlets each with a GFCI outlet, and the third will be to a simplex outlet to power just the refrigerator. Can I safely and properly run one neutral for these three circuits?

I will also be running a new circuit to the bathroom with one GFCI duplex outlet on it. Can I safely and properly use that same neutral above? =TB=