For any $n \geq 5$, the value of $1 + \frac { 1 } { 2 } + \frac { 1 } { 3 } + \cdots + \frac { 1 } { 2 ^ { n } - 1 }$ lies between\\ (a) 0 and $n / 2$.\\ (B) $n / 2$ and $n$.\\ (C) $n$ and $2 n$.\\ (D) none of the above.