I think its D, double-headed if I remember right. If this is brainiest can you mark it, please! I am trying to rank up. Thanks, hun!
Answer:
If a computer has a multicore processor then the operating system can run multiple threads to better the performance. And the maximum number of threads is equal to the number of cores. For one core there can be one thread. And the technique that is required here is termed as the multithreaded programming. And if you have a multicore processor, and if you assume that all your target device has that level of the processor then you can make use of it in designing applications as well. However, you need to provide an alternative for the device that does not have this facility.
Explanation:
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You can not claim this because most times credit card issuers will be able to match purchases and charges to your location, ex stores around you, online purchases sent to your location.