During validation testing, a computer user entered the following results for an antibody screen test: After the user verified the entries, the monitor displayed the following message: “Invalid test...

During validation testing, a computer user entered the following results for an antibody screen test:

After the user verified the entries, the monitor displayed the following message: “Invalid test results.” What caused the error message to display?

a. An invalid entry was made in the check cells (CC) column

b. The truth table was set up incorrectly

c. The interpretation does not correlate with the test entries

d. The interface to the laboratory computer system is down