The Rule in Foakes V Beer Will Apply in Which

The rule in Foakes v Beer will apply in which of the following scenarios?

A) Where the creditor has requested that the debtor pay the lesser amount by cheque instead of cash.
B) Where the creditor has requested that the debtor pay the lesser amount at a different place.
C) Where the creditor has requested that the debtor accompany payment of the lesser amount with some other act they were not originally bound to perform.
D) Where the creditor has requested that the debtor pay the lesser amount on an earlier date.