The area of rectangles whose vertices are (0,1), (6, 7), \[\left( \text{-2},\text{ 3} \right)\]and (8, 3) is

• A. \[10\sqrt{5}\]sq. units
• B. \[\sqrt{5}\]sq. units
• C. 40 sq. units
• D. \[\sqrt{15}\]sq. units