Arrange the following objects in ascending order of reflectance in optical thermal infrared regior (8.00-9.20 um).
A. Grass
B. Concrete
C. Sandy loam soil
D. Clear water
Choose the correct answer from the options giver below:

Correct option is D

The correct answer is (d), D, C, B, A
Clear water
Sandy loam soil
Concrete
Grass
Thermal infrared region
The thermal infrared (TIR) region extends from 3 μm to 14μm. It comprises medium-wave infrared (MWIR) and long-wave infrared (LWIR) wavelengths.
The 3-5 μm and 8-14 μm wavelengths are the most commonly used in thermal infrared remote sensing.
Information booster:
The electromagnetic spectrum encompasses the entire range of wavelengths or frequencies of electromagnetic radiation. In the field of remote sensing, electromagnetic waves are classified into distinct regions based on their wavelengths. These regions, such as visible light, infrared, and microwave, are delineated according to their respective wavelengths, typically measured in micrometers (µm), where one micrometer equals 10 to the power of -6 meters.
The infrared portion of the spectrum is divided into:
Near-infrared (NIR): 0.7-1.5 µm
Short-wave infrared (SWIR): 1.5-3 µm
Medium-wave infrared (MWIR): 3-8 µm
Long-wave infrared (LWIR): 8-14 µm
Far-infrared (FIR): 14 µm-100 µm