If there are 999 bases in an RNA that code for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?
(a) 11
(b) 33
(c) 333
(d) 1
(a) 11
(b) 33
(c) 333
(d) 1