Effect of Inflation and GDP growth

Can someone explain me the below?

In of the end of chapters questions, we are asked to find which fund had the most effect of the surprises in inflation and GDP growth on the returns of three funds.

These are the combined effects for the three funds .

Fund A: 0.10% + (–0.50%) = –0.40% Fund B: 0.32% + (0.00%) = 0.32% Fund C: 0.20% + (–0.55%) = –0.35%

The answer is A.

My question is why isn’t it fund B given that its positive 0.32%

-0.40% is a larger overall effect than +0.32%