One root of the equation \(\rm 2 x^2 - 8x - m = 0, \ is \ \frac{5}{2}\) The other root of the equation and the value of m are respectively:
1
\(\rm \frac{3}{2} \ and \ -\frac{15}{2}\)
2
\(\rm -\frac{3}{2} \ and \ \frac{15}{2}\)
3
\(\rm \frac{5}{2} \ and \ -\frac{15}{2}\)
4
\(\rm -\frac{5}{2} \ and \ \frac{15}{2}\)