Indicate true or false, as appropriate:
I. Mercury components, whether from mining tailings, enter the body through inhalation, digestive tract, or skin, causing poisoning.
II. Vehicle exhaust gases contain lead and interfere with the production of red blood cells, causing intoxication.
III. Residual metals: traces and soot (coal residue) from industry do not contaminate water and soil.


I. Mercury components, whether from mining tailings, enter the body through inhalation, digestive tract, or skin, causing poisoning.
II. Vehicle exhaust gases contain lead and interfere with the production of red blood cells, causing intoxication.
III. Residual metals: traces and soot (coal residue) from industry do not contaminate water and soil.
a) VVV
b) VFF
c) VFF
d) VVF
e) VFV