Which of the Following Is True About Witnesses Who Attest

Which of the following is true about witnesses who attest to a will?

A) These witnesses must be close family members.
B) They need not be family members,but must have known the testator a reasonable length of time.
C) If they are beneficiaries under the will,most states either ignore the dispositions to them or invalidate the entire will.
D) The witnesses must witness the writing of the will and the testator's signing of the will.
E) The witnesses cannot be witnesses for wills of more than one person within the same family.