Evaluate the Following Facts and Then Answer the Following Questions $\quad$

True/False

Evaluate the following facts and then answer the following questions:
Day 1 $\quad$$\quad$ S sends a letter to B with the following: "I will sell you my Play Station 3 for $150 when I get my new Play Station."
Day 2 $\quad$$\quad$ B receives the letter and responds,"I will take the Play Station for $150."
-S has made a valid offer to B.