Hi,
First of all please clarify the units for flowrate i.e. l/p
Do you require flow control on both the destinations i.e. @ B and C ?, if yes then there should be a control valve on both the lines. If flow control is not required, then there should be a control valve on the non governing case destination to kill the excess pressure developed by the pump.
Since, both the destination pressure are the same i.e. 3.5 kg/cm2 (please note that you need to consider Pmax and not Pmin for pump hydraulics), the elevation and line loss will determine which is the governing case. Once, you find out the governing case, a control valve shall be installed in the non governing case to add pressure drop, so that the head for both the cases are the same.
If there are control valves on both the lines, then the pressure drop of governing case control valve can be considered as 0.7 bar (general thumb rule), and the pressure drop across control valve in the non governing case shall be compensated accordingly.
Also, there should be a minimum flow protection line / re-circulation line from the pump to the storage tank.
Revert in case of any query.