AMC 8 2026 (Problem 1)What is the value of the following expression?1+2−3+4+5−6+7+8−9+10+11−121+2-3+4+5-6+7+8-9+10+11-121+2−3+4+5−6+7+8−9+10+11−12(A) 18\text{(A)}\;18(A)18(B) 21\text{(B)}\;21(B)21(C) 24\text{(C)}\;24(C)24(D) 27\text{(D)}\;27(D)27(E) 30\text{(E)}\;30(E)30Hints (3)Hint 1(1+2−3)+(4+5−6)+(7+8−9)+(10+11−12)(1+2-3)+(4+5-6)+(7+8-9)+(10+11-12)(1+2−3)+(4+5−6)+(7+8−9)+(10+11−12)Hint 2(1−1)+(4−1)+(7−1)+(10−1)(1-1)+(4-1)+(7-1)+(10-1)(1−1)+(4−1)+(7−1)+(10−1)Hint 30+3+6+9=180+3+6+9=180+3+6+9=18Final Answer(A) 181818