Roy dies and is survived by his wife, Marge. Under Roy's will, all of his otherwise uncommitted assets pass to Marge. Based on the property interests listed below, determine the marital deduction allowed to Roy's estate.

a. Timberland worth $1.2 million owned by Roy, Marge, and Amber (Marge's sis ter) as equal tenants in common. Amber furnished the original purchase price.

b. Residence of Roy and Marge worth $900,000 owned by them as tenants by the entirety with right of survivorship. Roy provided the original purchase price.

c. Insurance policy on Roy's life (maturity value of $1 million) owned by Marge and payable to her as the beneficiary.

d. Insurance policy on Roy's life (maturity value of $500,000) owned by Roy with Marge as the designated beneficiary.

e. Distribution from a qualified pension plan of $1.6 million (Roy matched his employer's contribution of $500,000) with Marge as the designated beneficiary.