Executor type (if filing electronically)

My 19yr old son who was my dependent died and I am doing his returns.

Turbo tax seems to want me to enter something for executor type on a California information worksheet, even though I will mail it.

What do I enter myself as? Since 19 he had no will or anything like that. The options are administrator, executor, beneficiary, spouse, trustee. no court involved as I have handled all things related to death since he lived at home as my dependent. He owes $, so no refund.