7C3 * 4C2 * 3C2 = 35*6*3 = 630.
An analyst will recommend a combination of 3 industrial stocks, 2 transportation stocks, and 2 utility stocks. If the analyst can choose from 7 industrial stocks, 4 transportation stocks, and 3 utility stocks, how many different combinations of 7 stocks are possible?
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A: 12
B: 19
C: 60
D: 180
E: 630