human
fill the blanks with the best options:
4. Although trains may use energy more (i) than do automobiles, the latter move only when they contain at least one occupant, whereas railway carriages spend a considerable amount of  time running up and down the tracks (ii) 

 A. lavishly 
 B. efficiently 
 C. routinely 
 or nearly so. 
 D. vacant 
 E. unimpeded 
 F. overlooked
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
Yes

--- Answer ---
grounded