If the fractional equation x + ax − 1 = a has no solution, then the value of a is () A. -1B. 1C. ±1D. -2

When the denominator X-1 = 0, the equation has no solution, that is, when x = 1, that is, 2AA − 1 = 1, so when a = - 1, the equation has no solution. When a = 1, x + 1x − 1 = 1, the equation has no solution, so when a = ± 1, the equation has no solution, so choose C

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