You were surprised to learn that the spell check dictionary /usr/share/dict/words, which stores one word per line, has some words that contain one or more non-alphabetic characters. You are interested in learning just how many such words there are. Which of the following commands would give you the answer. a. grep 'M°A-Za-2ls /usr/share/dict/words we-
b. grep TAA Za- /usr/share/dict/words wc-
c. grep A-Za-a" /usr/share/dict/words I we
d. grep-v .[A-Za-zr Asr/share/dict/words l wc-l
e. grep TA-Za-dA-Za-2A-Za-t usr/share/dict/words I wc- ive