Who are "we" in the pre-mortal life according to the LDS?

From this link > In our premortal life, **we** were taught lessons that prepared us to > assist Heavenly Father in bringing about the salvation of His children > (see D&C 138:56). For a non Christian like me, especially English is not my mother language, it's difficult to understand a sentence which came from a Christian world. That's why to me the word "we" in the quote is ambiguous since it can be:
A. We = the elects
B. We = all humankind Hence the question.