which expression has a value of 27

Hello there!
The answer should be the first option A.
16-(-11)
16+11
Answer⇒=27
10-17
10+-17
Answer⇒=-7
-15-(-12)
-15+12
Answer⇒=-3
-25-2
-25+-2
Answer⇒=-27
Hope this helps!
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-Charlie