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Paying the balance in full or paying in instalments?
This is a difficult question to answer as it comes down to what works best for you and what your financial situation is. Hence, there isn't a definitive answer. For example, for me, I'd rather pay in full and not pay interest than pay in installments. If the ultimate goal based on your question is to get a CLI, then either / or [installment v full payment] doesn't make a difference really in my opinion. You will still get a CLI if your profile warrants it.
Paying the minimum balance.