What is a digitial, or crypto, currency? A. A form of currency that only exists digitally, or virtually, and uses cryptography to secure its value. B. Any form of digital payment, such as using credit or debit cards for purchases of goods or services. C. Any form of elelctronic payment made by the U.S. Federal Reserve Bank. D. Loans made electronically to consumers by banks or other lending institutions and not by providing actual currency or coins