Find the value of k if the area is \(\frac{7}{2}\) sq. units and the vertices are (1,2), (3,5), (k,0).

• A. \(\frac{8}{3}\)
• B. –\(\frac{8}{3}\)
• C. –\(\frac{7}{3}\)
• D. –\(\frac{8}{5}\)