After Children Begin to Speak Their First Words, What Is

After children begin to speak their first words, what is the pace of their verbal acquisition?

A) fast, with children speaking 40 to 50 words within a month
B) slow, with children speaking 10 to 30 words within 3 to 4 months
C) fast, as expressive vocabulary outpaces receptive vocabulary
D) slow, 5 to 10 words within 6 months, and sometimes regression takes place