and the other labelled Reason (R). Select the correct answer from the codes

,

,

and

as given below.

Both Assertion

and Reason (R) are true and Reason (R) is the correct explanation of the Assertion

.

Both Assertion

and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion

.

Assertion

is true, but Reason (R) is false.

Assertion

is false, but Reason (R) is true. Assertion

: One of the particular solutions of the differential equation $\frac{\text{dy}}{\text{dx}} = e^{x+y}$ can be $e^x + e^{-y} = -2$. Reason (R) : $e^x + e^{-y} = \text{C}$ is the general solution of the differential equation $\frac{\text{dy}}{\text{dx}} = e^{x+y}$.