Consider the following three Constrained Optimization Problems (COP): (a) Maximize z = ln x subject to x >= 1; (b) Maximize z = ln x subject to x <= 1; (c) Maximize z = ln x subject to 1 <= x <= 2. Statements: (A) (a) and (b) have no solutions but (c) has a solution. (B) (a) and (b) have solutions but (c) has no solution. (C) (a), (b) and (c) have no solution. (D) (a) and (c) have no solution but (b) has solution. Choose the correct answer from the options given below:
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