How could this hypothesis be improved?

A team wants to run a test on a lead generation form. The test will analyze if reducing the number of form fields from 10 to 6 increases Product A newsletter signups. The KPI is newsletter sign-up form submits. While any lift is considered a win. if the team realizes a 10% or greater lift, they will immediately roll out these changes across all of their newsletter sign-up forms without additional testing.

Their current hypothesis is as follows: If we make it easier for our visitors to complete our Product A newsletter sign-ups by decreasing the number of form fields by 4. we will increase newsletter sign-ups by 10%.

How could this hypothesis be improved?
A . Be less specific with the result: the mam objective of the test is an increase in form completions, not a 10% lift.
B . Be less specific with the goal: do not list Product A because the team is hoping to implement this for all products.
C . Be less specific with the change: do not list the decrease in the exact number of form fields.

Answer: A