A 20-acre watershed located in Lakeville, MA with land use information below is given:Land use (%)Soil group Descriptions 4025 20 15BC DO Residential(average lot size ¼acre)Open space (in good condition) Commercial and business Industrial Estimate (a) the weighted curve number for this watershed for normal moisture conditions, (b) the initial abstractions in "inches", (c) the rainfall depth for a 30-min 5-yr storm for the site location in "inches", and (d) the direct runoff from the site in "ft3" and "acre-ft" for the above specified storm