A protein with a molecular weight of 10000 contains 5,4,3,2 and 1 charges. The mass spectrometer detects the protein ions respectively at mass/charge
A. 10001; 5001; 3334; 2501 and 2001
B. 2001; 2501; 3334; 5001 and 10001
C. 4001; 5001; 6668; 10001 and 20001
D. 20001; 10001; 6668; 5001 and 4001