Two identical pipes of length 'L', diameter 'd' and friction factor \[f\] are connected is parallel between two points For the same total volume flow rate with pipe of same diameter 'd' and same friction factor \['f',\] the single length of the pipe will be:

• A. \[\frac{L}{2}\]                          
• B. \[\frac{L}{\sqrt{2}}\]
• C. \[\sqrt{2}L\]                  
• D. \[\frac{L}{4}\]