Concept:Reciprocal of a number is 1 divided by that number. To divide fractions, multiply by the reciprocal of the divisor.Explanation:First, simplify the expression inside parentheses: (55−5÷112). Dividing by 112 is same as multiplying by its reciprocal 211. So we get 55−5×211. Simplify 55−5 to 11−1. Then multiply: 11−1×211=2−1. The reciprocal of 2−1 is −2.Answer:Option B: −2