please help! taking a quiz! What does the phrase "lost to the mists of time" mean as it is used in this sentence?
"Although the actual invention of fireworks is lost to the mists of time, the Chinese are generally given
credit for it, with the date varying from one to two thousand years ago." (paragraph 2)
A Communication was nonexistent when fireworks were invented.
B
The historical documents about the invention of fireworks have been lost.
С
The invention of fireworks happened long ago and is difficult to remember clearly.
D
The Chinese do not want people to know when fireworks were invented.