A factory’s smokestack continually produces smoke. The smoke always rises with a constant speed relative to the air around it. Suppose that the air was initially still, then abruptly started blowing to the right, then abruptly became still again for some time. Which of the following could show the resulting shape of the smoke plume?
Answer Choices
A. fma2021q18
B. nan
C. nan
D. nan
E. nan