According to the rules of proper journalism, which of the following is correct:

(1 point)
Responses

It was estimated the car was traveling sixty-five miles per hour when it crashed into a tree.
It was estimated the car was traveling sixty-five miles per hour when it crashed into a tree.

It was estimated the car was traveling 65 m.p.h. when it crashed into a tree.
It was estimated the car was traveling 65 m.p.h. when it crashed into a tree.

It was estimated the car was traveling sixty-five mph when it crashed into a tree.
It was estimated the car was traveling sixty-five mph when it crashed into a tree.

It was estimated the car was traveling 65 mph when it crashed into a tree.

According to the rules of proper journalism, option 2 is correct:

It was estimated the car was traveling 65 m.p.h. when it crashed into a tree.