Because of a recent increase in the reporting of both Cyclospora cayentanensis and Cryptosporidium sp. in your laboratory, you notify public health officials; they ask you to help canvas other laboratories in your area to determine if they also have an increased number of cases.  Upon visiting the laboratories and reviewing their records, you find that there have been very few cases reported.  A subsequent stool survey by your laboratory finds a large part of the community infected.  Which of the following might account for the discrepancy between your laboratory and the other community laboratories?

(a) C. cayentanensis and Cryptosporidium sp. screening are not part of a routine stool O & P in other community laboratories and may not have been performed
(b) Personnel in other laboratories may not be adequately trained or have experience identifying C. cayentanensis and Cryptosporidium sp.
(c) The other laboratories have been performing at least three different techniques to confirm these coccidians in stool samples
(d) A and B