If the Market for Bottled Water Is Perfectly Competitive,how Will

If the market for bottled water is perfectly competitive,how will the following aspects differ in the short run and in the long run?
a)The use of inputs
b)The market supply curve of bottled water when firms have identical cost structures
c)The profitability of firms with identical cost structures earning economic profits
d)Condition to stop production
e)The average cost curves of a firm
f)The number of firms