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If for a + b + c ≠ 0, the lines ax + by + c = 0, bx + cy + a = 0 and cx + ay + b = 0 are concurrent, then ………

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If for a + b + c ≠ 0, the lines ax + by + c = 0, bx + cy + a = 0 and cx + ay + b = 0 are concurrent, then ………

(a) ab + be + ca = 0

(b) (a/b) + (b/c) + (c/a) = 1

(c) a = b

(d) a = b = c   

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The correct option (d) a = b = c

Explanation:

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