A Police Department Is Trying to Allocate Crime Control Resources

A police department is trying to allocate crime control resources between murder and burglary.Detectives cost $40,000 each.Suppose that she marginal benefit of one less murder is $20,000 while the marginal benefit of one less burglary is $1,000.The number of murders and burglaries that occur at different levels of detective allocation is shown in the table. $\begin{array}{ccc}\begin{array}{c}\text { Number of } \\\underline { \text { Detectives Assigned }}\end{array} & \begin{array}{c}\text { Number of } \\\underline { \text { Murders }}\end{array} & \begin{array}{c}\text { Number of } \\\underline { \text { Burglaries }}\end{array} \\ 0 & 20 & 100 \\1 & 16 & 60 \\2 & 13 & 30 \\3 & 11 & 10 \\4 & 10 & 0\end{array}$
The marginal benefits of 1,2,3,and 4 detectives being assigned to murder prevention are

A) 4,3,2,and 1.
B) $4,000,$3,000,$2,000,and $1,000.
C) $16,000,$13,000,$11,000,and $10,000.
D) $80,000,$60,000,$40,000,and $20,000.