A line between stations $P$ and $Q$ laid on a slope of $1$ in $5$ was measured as $350\; m$ using a $50\; m$ tape. The tape is known to be shortly by $0.1\; m$.

The corrected horizontal length (in $m$) of the line $\text{PQ}$ will be

- $342.52$
- $349.30$
- $356.20$
- $350.70$