[The Following Information Applies to the Questions Displayed Below

Multiple Choice

[The following information applies to the questions displayed below.]
The following entry appears in Martin Supply's general journal on March 10,2018:

-This transaction involves:

A) Martin's collection of $30,000 on an account receivable.
B) Payment of $21,000 cash by Martin.
C) A $21,000 overall increase in Martin's assets.
D) Sale of equipment by Martin for $51,000.