Answer:
A.It will increase by 250 units.
Gitli will need to sale 250 more units to break even.
Step-by-step explanation:
First we calculate the CM per unit

55 - 30 = 25
Then we calculate the current BEP in untis

25,000/25 = 1,000
Next we recalculate the CM for the new escenario
If variable cost increase $5:
CM 25 - 5 = 20
And the New BEP :
25,000/20 = 1,250
Last step will be calculate the cinrease or decrease:
1,250 - 1,000 = Δ250