If You Hadn't Been Late for Work, the Boss Wouldn't

Multiple Choice

If you hadn't been late for work, the boss wouldn't have gotten furious. From that sentence we know the fact that truly happened is ...

A) he/she is late for work that the boss gets furious on her/him.
B) he/she is going to late for work that the boss gets furious on her/him.
C) he/she was late for work that the boss got furious on her/him.
D) he/she will be late for work that the boss gets furious on her/him.