Documentation should be easy to read & understood by lay people. Which abbreviations should not be used because of confusion?

a. U (Unit)
b. IU (International Unit)
c. Q.D. (Every day)
d. Q.O.D. (Every other day)
e. No zero before decimal dose (.X mg) Write 0.Xmg
f. Zero after decimal point (X.0) Write Xmg
g. MS, MSO₄ (Morphine sulfate)
h. MgSO₄ (Magnesium sulfate)