Can someone please answer this question please answer it correctly and please show work please help me I need it

Answer:
B)U=-S
C) u is opposite of the opposite of u
Step-by-step explanation:
From the picture U=2 and S=-2, so -S=-(-2)=2=U.
The first is not true because -U=-2 and it is not U.
Opposite of U is S, and the opposite of S is U, so it is tru that U is opposite of opposite of U
Answer:
U is the opposite of the opposite of U and U=-S
Step-by-step explanation:
The opposite of U is -U, and the opposite of -U is U.
U=-S because -S=S and S=U.