Final answer:
The question addresses a retail operational procedure about the maximum number of tills an employee can pull at once. While it may vary by store, the common practice is handling one till at a time for security and accuracy, likely making 'A) One' the correct answer.
Step-by-step explanation:
The question you've asked pertains to operational practices within a retail environment, specifically regarding the maximum number of tills one is allowed to pull at a time.
This seems to be a policy-related question, which typically means it is defined by the store or company's operational procedures. Without more context, it's difficult to provide a definitive answer as this can vary from one business to another.
However, for security and accuracy reasons, many retail businesses prefer that employees handle only one till at a time to minimize risks such as theft, cash handling errors, and accountability issues. So, the most likely correct answer is A) One, although you should confirm this with your specific workplace policy.