Mrs. Petrova wrote the expression below on the whiteboard in her classroom. She asked the students in her class to write an equivalent expression using no more than one set of parentheses.

4(3x - 2z)

• Taylor wrote 12x + 8z

• Jamie wrote 2(3x + 4z)

• Chris wrote 5x + 7x - 8z

Which of the three students wrote an expression that was equivalent to Mrs. Petrova's expression?