This ionic equation represents iodide ions reacting with manganate(VII) ions in acidic solution. $u\text{MnO}_4^- + v\text{H}^+ + w\text{I}^- \rightarrow x\text{Mn}^{2+} + y\text{H}_2\text{O} + z\text{I}_2$ The letters $u$, $v$, $w$, $x$, $y$ and $z$ each stand for whole numbers. At least two of $u$, $v$, $w$, $x$, $y$ and $z$ are equal to one another. What is the least possible value of $v$?
- A2
- B8
- C10
- D16