Answer: B. $415 Billion
Step-by-step explanation:
Total Market Cap is the total market value of all the stock of the 4 companies.
= ∑(Price per share * Shares outstanding)
= (28.8 * 1.53) + (47.90 * 4.17) + (19.60 * 5.77) + (75 * 0.79)
= 44.064 + 199.743 + 113.092 + 59.25
= $416 billion
Closest to option B.