Cigarette smoking is detrimental to one's health; ___________.

A、itconstrictstheairwaysofthelungs,elevatesbloodpressure,andcauseslungcancerandrespiratorydiseases
B、itisconstrictingtheairwaysofthelungs,elevatingbloodpressure,andcausinglungcancerandrespiratorydiseases
C、itconstrictstheairwaysofthelungs,elevatingbloodpressure,andcauseslungcancerandrespiratorydiseases
D、itconstrictstheairwayofthelungs,elevatingbloodpressure,andcausinglungcancerandrespiratorydiseases