Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): A remote sensing system that possesses only a sensor and depends on an external source to irradiate the target to be sensed is called an active remote sensing system.
Reason (R): Synthetic Aperture Radar uses microwave band to estimate soil moisture.
In light of the above statements, choose the correct answer from the options given below.