Which Statement or Statements Regarding Antoine Lavoisier and His Discovery

Which statement or statements regarding Antoine Lavoisier and his discovery of the conservation of mass in chemical reactions must be false.

A) Lavoisier conducted his experiment in an apparatus that trapped all reaction products.
B) Lavoisier was able to make accurate mass measurements.
C) Lavoisier was able to make precise mass measurements.
D) Lavoisier did not trap gases in his experiments because their mass was negligible.
E) A and D