I attached the chart for refrence, im so confused on how to answer the word problems

A) What is the optimal crime control level for the Way-Below Normal University? Why? B) Is level 3 of crime control beneficial for the University? Why? C) Which level of crime control exhibits the over-allocation of resources? Why ?Level two - 1095 1140 1095-990 1140-1020 1140-1095 security officer with a guard dog =105/120 =120 1140/120 -0.8 -9.5 =45 Level 3- 1 security 1215 1350 1215-1095 1350-1140 1350-1215 officer with a guard dog and patrol car =120/210 =210 1350/210 =0.5 =6.4 =135 Level four- 2 1350 1530 1350-1215 1530-1350 1530-1350 security officers with a guard dog =135/180 =180 1530/180 =0.7 =8.5 =180 Level 5- 2 security | 1500 1680 1500-1350 1680-1530 1680-1500 guards with a guard dog and patrol car =150/150 =150 1680/150 =1 =11.2 =180 Level 6- 5 security 1845 1830 1845-1500 1830-1680 1830-1845 guards with 4 guard dogs and 2 patrol =345/150 =150 cars 1830/150 =2.3 =12.2 =-15