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If an AI template says: "Dear {customer}, your balance is {balance} USD." and customer = "John", the balance is 0, what will the message show?

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If an AI template says: "Dear {customer}, your balance is {balance} USD." and customer = "John", the balance is 0, what will the message show?
ADear John, your balance is 0 USD.
BDear John, your balance is USD.
CDear John, your balance is {balance} USD.
DDear John, your balance is None USD.
Step-by-Step Solution
Solution:
  1. Step 1: Understand placeholder substitution with zero value

    Zero is a valid number and will be shown as "0" in the message.
  2. Step 2: Form the final message

    Substitute {customer} with "John" and {balance} with 0, resulting in "Dear John, your balance is 0 USD."
  3. Final Answer:

    Dear John, your balance is 0 USD. -> Option A
  4. Quick Check:

    Zero value shown correctly = A [OK]
Quick Trick: Zero values display as '0', not empty [OK]
Common Mistakes:
  • Assuming zero is treated as empty or None
  • Leaving placeholder unchanged when value is zero

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