If there is a combination of single-digit numerals and all other numerals in the same sentence (For example, “I have 1 pen and 15 pencils”), how will you transcribe it? Gotranscript

a) I have 1 pen and fifteen pencils.

b) I have 1 pen and 15 pencils (this way improves readability since 1 and 15 are on the same line).

c) I have one pen and 15 pencils.

d) I have one pen and fifteen pencils.