Litman mock, question #7 error?

Hi guys, im camped out ata coffee shop doing mocks all day!

Anyways, is there an error with the solution to question #7 in the Mark Litman mock exam? They used a 25x multiplier for the futs instead of 100x.

I dont see why they used 25x when the question states that they hedged with 100 contracts. Im getting a .73 effective beta my way.

What am i missing here?