Which answer choice has no errors in capitalization?
a. brenda added, "there are times i prefer writing with pen and ink."
b. "on the other hand," jake joined in, "using a keyboard allows me to write faster."
c. "some writers," said lena, "still use an old-fashioned typewriter."
d. "the keyboard on my phone is unpredictable," continued walt. "sometimes it makes my mistakes even worse."?