June sales were​ $1,000 while projected sales for July and August were​ $6,400 and​ $5,000, respectively. Sales are​ 40% cash and​ 60% credit. All credit sales are collected in the month following the sale. What are the total expected collections for​ July?
a) $6,000
b) $6,400
c) $7,000
d) $8,560