Which one is correct ? Valid contract, offer, acceptance, consideration, capacity or the statute of frauds?

Multiple Choice 3 points They marry the next day. Two weeks later, Travis decides to buy Taylor a miniature pet giraffe for their big two-week anniversary. After interviewing several giraffe merchants, he decides to visit the Harlan Giraffe Emporium, located in Harlan, Kentucky. Pablo, the proprietor of the Giraffe Emporium, shows Kanye a unique, miniature lap giraffe named Stretch. Stretch is represented as a one-of-a-kind creature who will grow only 3 feet tall. Pablo offers to sell Stretch for the low price of $350,000, cash upfront. Travis is concerned that the small animal may have health problems and decline. Instead, he offers a $100,000 down payment and an additional $200,000 when the animal reaches the age of 3. Anxious to sell to a celebrity, Pablo agrees. The parties draw up the agreement on an old piece of notebook paper that reads as follows: I, Travis, agree to pay a total of $300,000 for Stretch, the miniature giraffe. This will be paid $100,000 at the signing of this agreement and $200,000 when Stretch has his third birthday. Travis will receive Stretch immediately. Both parties sign the agreement. Is this a valid contract? If not, which elements are issues here