The process capability indexes (C_pk) of four processes are as follows: For process Q, C_pk = 0.81 For process R, C_pk = 2.26 For process S, C_pk = 0.63 For process T, C_pk = 1.52 Which two processes are capable?

The process capability indexes (Cpk) of four processes are as follows: For process Q,Cpk=0.81 For process R,Cpk=2.26 For process S,Cpk=0.63 For process T,Cpk=1.52 Which two processes are capable? process Q and process S process Q and process R process R and process S process R and process T process Q and process T