Mr. Boy Tapang bought a rectangular lot. The perimeter of the lot is 80 meters and it's area is 300 square meters. What is now the length and width of a rectangular lot bought by Mr. Boy Tapang?

A. Length= 40m, Width=150m
B. Length= 75m, Width=20m
C. Length= 150m, Width=40m
D. Length= 30m, Width=10m

please help me.
I'll report the nonsense answers​