Choose from options: Determine if the sentence is true based on the text below:
his parents on August 18 consented to his life support machine being turned off.

Carl Smith collided with a concrete lamp-post while skating and suffered a skull fracture that caused a coma. When he failed to regain consciousness, his parents on August 8 consented to his life support machine being turned off.
Options:
 -Yes
 -It's impossible to say
 -No
No