Select the sentence that corrects the error in the following. When I saw the tent collapse.

A: I was sad when I saw the tent collapse.
B: There is no error.
C: When I had seen the tent collapse.

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.

Jane determines x = 4 and y = 1 is the solution to the following system of equations.

True or false: a trust is a giant corporation made up of a group companies