Credit cards were introduced in 1959. in 2014, the u. s. credit card balance was $880 billion. which of the following is true?

a. no part of the $880 billion balance is counted in m1 and m2.
b. the $880 billion balance is part of both m1 and m2.
c. only that portion of the $800 billion actually charged in 2014 is counted in m1 and m2.
d. the $880 billion balance is part of m2 but not part of m1