The decreasing order of acidic characters :1)p-nitrophenol2)o-nitrophenol3)m-nitrophenol4)phenol a)?

... 1>2>3>4b)2>1>3>4c)1>2>4>3d)2>1>4>3 or:... 1>2>3>4b)2>1>3>4c)1>2>4>3d)2>1>4>3

... 1>2>3>4b)2>1>3>4c)1>2>4>3d)2>1>4>3

or:... 1>2>3>4b)2>1>3>4c)1>2>4>3d)2>1>4>3

Tags:3d,