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单项选择题

A typical example of a process # 19082 in the /proc file would be:     
# ls -l /proc/19082     
total 0  
dr-xr-xr-x  1  root system 0    Sep 15  15:12  .     
dr-xr-xr-x  1  root system 0    Sept 15 15:12  ..     
-rw-------  1  root system 0    Sept 15  15:12 as     
 -r--------  1  root system 128  Sept 15  15:12 cred     
--w-------  1  root system 0    Sept 15  15:12 ctl     
dr-xr-xr-x  1  root system 0    Sept 15  15:12 lwp    
 -r--------  1  root system 0    Sept 15  15:12 map     
dr-x------  1  root system 0    Sept 15  15:12 object    
 -r--r--r--  1  root system 448  Sept 15  15:12 psinfo    
-r--------  1  root system 1024 Sept 15  15:12 sigact    
 -r--------  1  root system 1520 Sept 15  15:12 status    
 -r--r--r--  1  root system 0    Sept 15  15:12 sysent  
Writing to which of the following files will allow the owner to stop a process?()

A. status
B. sysent
C. ctl
D. as

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