kindly your support to answer below Question about Operating System

Q$4.$ Consider the following snapshot of a system:

Process Allocation Max Available Need

A B C D A B C D A B C D

P$0001200121520$

P$110001750$

P$213542356$

P$306320652$

P$400140656$

Answer the following questions using the banker$$s algorithm:

a$.$ What is the content of the matrix Need?

b$.$ Show whether the system is in a safe state?

c$.$ If a request from process P$1$ arrives for $(0,4,2,0),$ can the request be granted immediately?