A CHANT (from Chan"nel T"anker) was a type of prefabricated coastal tanker which was built in the United Kingdom during the Second World War due to a perceived need for coastal tankers after the invasion of France. Some CHANTs were adapted to carry dry cargos. These were known as the Empire F type coasters.
Can we infer the following?
CHANT's were built before World War I.

 a. Yes; b. It's impossible to say; c. No;
The answer is:
c.