How many letters does the Spanish alphabet contain according to the current RAE standard, after the removal of 'ch' and 'll' as separate letters in 2010?
ATwenty-six
BTwenty-nine
CTwenty-eight
DTwenty-seven✓
The RAE's 2010 Ortografia reform officially reduced the alphabet to 27 letters by removing ch and ll as independent letters, aligning with international standards.