And sure enough, the following week there we were in front of this astonished stockbroker, and I was sitting there red-faced and quiet, and my mother, the real Mrs. Tan, was shouting at his boss in her impeccable broken English.

Select the sentence that has no punctuation or capitalization errors. a.this semester, i'm taking math, history, german, and english. b.this semester, i'm taking math, history german and, english. c.this semester, i'm taking math history, german and english. d.this semester, i'm taking math, history, german, and english.