Discussion
As per ISO/IEC 7811, a magstripe card contains :
Answer: C
An ISO/IEC 7811 magnetic stripe card has three tracks.
The standard defines the physical characteristics and the recording of the magnetic stripe on identification cards such as bank cards. The stripe carries up to three tracks: Track 1 holds up to 79 alphanumeric characters, including the cardholder's name, Track 2 holds 40 numeric characters, including the account number and expiry date, and Track 3 holds up to 107 numeric characters.
Card skimming typically copies Tracks 1 and 2, which is why examiners of counterfeit cards read all three.
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