If your including the cost of the items that were bought you still only really lost thirty dollars, but you also lost the items that were bought with the 70
Answer:
B. The approval of a vaccine helps the economy.
Explanation:
Coronavirus vaccines are highly desired worldwide and it is not surprising that the launch of these vaccines would stimulate the markets and bring benefits to economies, as they generate a perspective of normality and progress.
This is confirmed by the text above, which shows that the launch of vaccines has increased stocks and boosted the economy.