Stupid questions (Standby Exam Payment)

<p>Hi, I know this question may be silly, but I just want to confirm.
Is check or money order acceptable for Standby testing?
Because my teacher told me that they only accept credit card.
By the way, I'm going to test at an international testing center.</p>

<p>So, money order, check, credit card or all of them are acceptable for Standby testing?</p>