ProgramA demonstrates one correct way to make interaction with p$1$ thread safe, but ProgramB is not correct. Select all the true statements below about the two programs.Java provides locks for all objects, but p$1$ is a primitive, not an object.ProgramA demonstrates fine$-$grained synchronization.ProgramA could have used synchronized$($amount$)$Program B could have used synchronized$($this$)$ but it would lock up the whole containing object.The "synchronized" keyword could have been placed in the method header instead to provide fine$-$grained synchronization.