xpertthiefswaggcommu xpertthiefswaggcommu 10-02-2020 Mathematics contestada 4) Which numerical expression equals − 1? A) − 1(1− 1) B) − (− 1)(− 1) C) (− 1) + 1 − 1 (− 1) D) − (− 1) − (− 1)(− 1)