## Which one of the following is the general solution of the first order differential equationy = 1 + x + tan–1 (x + c), where c is a constant.

Which one of the following

y = 1 + x + tan(x + c), where c is a constant.

y = 1 – x + tan–1 (x + c), where c is a constant.

y = 1 – x + tan(x + c), where c is a constant.