The area of the region covered by the TV broadcast by a TV tower of 100 m height is (Radius of the earth \[=6.4\times {{10}^{6}}m\]).

• A. \[1.28\pi \times {{10}^{3}}k{{m}^{2}}\]
• B. \[2\pi \times {{10}^{4}}k{{m}^{2}}\]
• C. \[3.1\times {{10}^{4}}k{{m}^{2}}\]
• D. \[6\pi \times {{10}^{4}}k{{m}^{2}}\]