Correct Answer: B
Explanation:
difference between units produced and exported in various years is given by :
2003 = 3 crore, 2001 = 2 crore, 2002 = 5 crore, 2003 = 3 crore, 2004 = 4 crore,
2005 = 2 crore, 2006 = 4 crore, 2007 = 3 crore
Maximum difference is in the year 2002.