The number of tickets ________ will be determined by the size of the stadium.

A．DNA testing should be systematized
B．only authorized laboratories can conduct DNA testing
C．the academy only is authorized to work out standards for testing
D．the academy has the right to accredit laboratories for DNA testing

A．would have to leave their fingerprints for further investigations
B．would have to submit evidence for their innocence
C．could easily escape conviction of guilt
D．could be convicted of guilt as well