May someone me with apostrophes?
1. identify the sentence that correctly uses apostrophes.
a. i can't remember if this book is alex's or yours.
b. i can't remember if this book is alexs' or yours.
c. i can't remember if this book is alex's or your's.

2. a. is this box of pencils your's, mine, or michelle's?
b. is this box of pencils yours, mine, or michelle's?
c. is this box of pencils yours', mine, or michelle's?

you!