If (a, b) is at unit distance from the line 8x + 6y + 1 = 0, then which of the following conditions are correct ?

1. 3a – 4b – 4 = 0

2. 8a + 6b + 11 = 0

3. 8a – 6b + 1 = 0

Select the correct answer using the code given below :

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