When did Apple started to sell shares to the public

A．Leif Erikson did not visit America
B．Biarni might have visited America before Leif Erikson
C．Biarni did not visit Wineland
D．Leif Erikson visited Wineland first

A．dependence on illegal drugs
B．targeted points on the body
C．the change in the flow of blood
D．whether a patient can be treated by acupuncture