Read the following paragraph and determine if the hypothesis is true:

The 1910 NCAA football season had no clear-cut champion, with the "Official NCAA Division I Football Records Book" listing Harvard and Pittsburgh as having been selected national champions. Only Harvard claims a national championship for the 1910 season.

Hypothesis: Official records book lists all the champions of football starting from year 1910n
OPTIONS:
- Yes
- It's impossible to say
- No
It's impossible to say