Statement:
Water supply in wards A and B of the city will be affected by about 50% on Friday because repairing work of the main lines is to be carried out.
Conclusions:(I) The residents in these wards should economize on water on Friday.
(II) The residents in these wards should store some water on the previous day.
Only conclusion I follows
Only conclusion II follows
Both I and II follow
Neither I nor II follows