Company A's total online sales across all zones comes to 3060 units, while Company B's total online sales comes to 2310 units, both figures already established from the earlier parts of this set.
For B to match A's online total, it needs to add \(3060-2310=750\) more units.
Expressed as a percentage of B's current online sales, that increase is \(\dfrac{750}{2310} \times 100 \approx 32.5\%\), matching option 1.