The lengths of the sides of a triangle are 5m, \[1.2\]decametre and 130 dm. Then its area is ____.

• A.  \[24\,{{m}^{2}}\]                           
• B.  \[30\,{{m}^{2}}\]   
• C.  \[48\,{{m}^{2}}\]               
• D.         \[40\,{{m}^{2}}\]