What is the solution of the differential equation `(dx)/(dy) = (x + y + 1)/(x + y - 1) `?

Options

A. `y -x + 4` ln (x + y) = c
B. y + x + c ln (x + y) = c
C. y - x + ln (x + y) = c
D. y +x + 2 ln (x + y) = c

Answer

C