On May 25, Dew Drop Inn purchased $500 of supplies on account. In June, $300 of supplies was used and $400 was paid to the supplier. Which of the following are true statements? (Check all that apply.)
a) Net income for May decreases by $500.
b) Cash flow for June decreases by $100.
c) Accounts payable decreases by $400 in June.
d) Supplies expense increases by $300 in June.