In a multiple sampling plan, the n1 refers to ____ while the c2 refers to _____.
a. sample size for the entire sampling; maximum number of counts
b. sample size for sample 1; cutoff number for sample 2
c. first item inspected; rejection number for the second item
d. sample size for the entire inspection; cutoff number of item 2
e. sample size for sample 1; acceptance number for sample 2