Rate the similarity of the following two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing"?

Four seriously injured in M23 motorway crash
Four injured in motorway crash

OPTIONS:
I. 0
II. 1
III. 2
IV. 3
V. 4
VI. 5

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
V.