What Was the Effect of Samuel's Statement That Keisha Should

What was the effect of Samuel's statement that Keisha should take everything,assuming he was of sound mind?

A) His statement was ineffective to revoke his prior will only because he was angry when he made it.
B) His statement was ineffective to revoke his prior will only because he believed he was dying at the time he made it.
C) His statement would likely be upheld as an oral will because he made the statement during his last illness in front of witnesses who later wrote down his wishes.
D) Because a will is not usually required to be in writing,his statement was effective to revoke any prior will.
E) Because a will must be in writing,his statement has no effect.