[Kids' Debts] Marta Agrees to Buy Natasha's Convertible, but Marta

Multiple Choice

[Kids' debts] Marta agrees to buy Natasha's convertible, but Marta may be losing her job, in which case, her mother Lottie will pay pursuant to the terms of the contract Lottie signed. Jeb signs an agreement to pay for his son Byron's plastic surgery, if his son cannot afford the payments. Lucia agrees to sell her drumset to Marcus because Marcus' father said he will back the deal.
-Which individuals would be considered to have secondary obligations?

A) Marta, Byron, and Marcus.
B) Natasha, Jeb, and Lucia.
C) Natasha's father, Byron, and Marcus' father.
D) Lottie, Jeb, and Marcus' father.
E) Lottie, Byron, and Marcus' father.