Stojko Corporation had a net decrease in cash of $12,500 for the current year. Net cash used in investing activities was $54,500 and net cash used in financing activities was $40,500. What amount of cash was provided (used) in operating activities?

A) 82,500 provided

B) (82,500) used

C) (12,500) used

D) 107,500 provided

E) (107,500) used

PLEASE GIVE CLEAR EXPLANATION, ESPECIALLY WHY IT'S PROVIDED/USED. THANKS.