please answer

QUESTION 6. Consider two countries: South Korea and New Zealand and two goods' Lamb and Air Pumps. South Korea imports 5210 million worth of lamb from New Zealand and exports $10 million worth of lamb to New Zealand On the other hand, New Zealand imports 560 million worth of air pumps from South Korea and exports $20 million worth of air pumps to South Korea, What is the inter-industry trade measure between there two countries? (a) 23. (b) 1/5 (c) 4/5. (d): 1/3