সমাধান করুন 12 – [26 – {2 + 5 × (6 – 3)}] A. 2 B. 3 C. 7 D. 8

Work from the innermost bracket: (6 − 3) = 3, then {2 + 5 × 3} = 17, then [26 − 17] = 9, and finally 12 − 9 = 3.