Diamond Company had the following transactions during June: Performed services for $2,000 on account; received cash on account, $6,000; paid $700 for repair expense; paid $1,800 to a supplier that it owed from the previous month. What is the combined effect on Cash of these June transactions? O A. $3,500 decrease O B. $6,000 increase O C. $3,500 increase O D. $2,500 decrease