r - How to filter an table by a value in row -


I am doing a script in r which is the csv file then To load my data I have to make these functions user 

  data & lt; - read.csv ("info.csv", colClasses = "character")   
 and my data looks like this  
  abcd ... 1 "A" 3 4 ... 5 "b" 7 8 ... 9 "c" 7 4 ... 9 "c" 2 5 ... 9 "a" 1 6 ...   
 How can I filter only "C" or "A" or both or any other string?   
 
 
 For only one, you can try:  
  Data Lonely and lieutenant; - Using the data [data $ B == "A",]   
 or  subset ()  command:  
  Data For the A or C, you can use the % in%  operator, and the Lieutenant-Subset (Data, B == "A")   
 Are:  data.ac> lt; - Data [data is $ B% C ("A", "C"),] , or  data.AC < - subset (data, B%% C ("A", "C"))

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