Which two sentences from the article include CENTRAL ideas of the article?
(5 Points)
All three players were wearing a new high-tech helmet, available for the first time this season; The construction reduces the force of rotational acceleration, a major cause of concussions.
"Think of the current helmets like old cars, all made of steel," said Dave Marver, the VICIS chief executive officer; "We didn't get into this to help 2,000 pro players, even though we want to do that," he said.
The product of a start-up company in Seattle, Washington, it might look like the traditional football helmet from afar; The current version of the company's football helmet sells for $1,500.
Professional players have the option of wearing the helmet of their choice from a list of those approved by the NFL; Marver was in Washington, D.C., last week for meetings with government leaders.
