Which statement or statements is$/$are true regarding blocking routines? $($Level $1)$ Group of answer choicesa. These routines are part of the sick$-$role model.b$.$ They are carried out in blocks of time so all patients can receive the same services.c$.$ The timing of the blocking activities is scheduled at the most convenient times for the staff, not necessarily the patient.d$.$ They are routines based on individual preferences that black certain things from being carried out.e$.$ a and bf$.$ b and cg$.$ a and ch$.$ b anddi. All of the above.j$.$ None of the above.