How does a heavy-up geo-experiment strategy deal with budget?

How does a heavy-up geo-experiment strategy deal with budget?

 

• It keeps the treatment group budget the same while suppressing the control group budget.
• It suppresses the treatment group budget while keeping the control group budget the same.
• It increases the treatment group budget while keeping the control group budget the same.
• It keeps the treatment group budget the same while increasing the control group budget.