How many test cases would be required to cover all the decisions in following program?READ A READ B IF A>= 10 THEN PRINT A; ELSEIF B>5 THEN PRINT B IS SMALL; ELSEIF A>B THEN PRINT A IS BIGGER THEN B; ELSE IF B>A THEN PRINT B; ELSE PRINT NULL ;END IF; END IF; END IF; END IF;