(a)
Upon the election of the surviving spouse or the personal representative, guardian of the estate, or conservator of the estate of the surviving spouse, all or a portion of the following property may be administered under this code:
(1)
The one-half of the community property that belongs to the decedent under Section 100, the one-half of the quasi-community property that belongs to the decedent under Section 101, and the separate property of the decedent.
(2)
The one-half of the community property that belongs to the surviving spouse under Section 100 and the one-half of the quasi-community property that belongs to the surviving spouse under Section 101.
(b)
The election shall be made by a writing specifically evidencing the election filed in the proceedings for the administration of the estate of the deceased spouse within four months after the issuance of letters, or within any further time that the court may allow upon a showing of good cause, and before entry of an order under Section 13656.