The "Sharpe Performance Measure" (SHP)is
A)SHP = $\frac { \left( \bar { R } i - R \mathcal { R } \right) } { \sigma _ { i } }$

The "Sharpe performance measure" (SHP) is

A) SHP = $\frac { \left( \bar { R } i - R \mathcal { R } \right) } { \sigma _ { i } }$
B) SHP = $\frac{(\bar{R} i-\mathcal{R} f) }{2}$
  $\sigma_{i}$
C) SHP = $\bar { R }_ { i }$ - $e_ { f }$ + $\bar { R }_ { i }$ $e_ { i }$
D) none of the options