Which of the following statements is true regarding a purchaser of a timeshare waiving their right to rescind the purchase?
a) It is not possible to waive the right to rescind a timeshare purchase.
b) Waiving the right to rescind requires written consent from the timeshare company.
c) Waiving the right to rescind is automatically granted upon purchase.
d) Waiving the right to rescind is only possible within 24 hours of purchase.