Assertion: call's option | /r/CapableOf | become null
Facets:
Source sentences:
text: Out" options start their lives active and become null and void in the event that a certain knock-out barrier price is breached.
text: Down-and-out : spot price starts above the barrier level and has to move down for the option to become null and void.
text: : spot price starts above the barrier level and has to move down for the option to become null and void.