Natalie is married to Chad, who abandoned her in early June of 2020. She has not seen or communicated with him since then. She maintains a household in which she and her two dependent children live. Which of the following statements about Natalie's hling status in 2020 is correct? Oa. Natalie can use the rates for single taxpayers. Ob. Natalie can file as a head of household. Oc. Natalie can file a joint return with Chad Od. Natalie can file as a surviving spease