Cleo's Husband Died in January of 2012

Cleo's husband died in January of 2012.She has a 20 year-old son and a sister who live with her.Her son attends a trade school part-time and earned $11,000 from his part-time job.Cleo's sister is a full-time student and only earned $2,800 from her part-time job.How many personal and dependency exemptions can Cleo claim in 2013 and what is her filing status?

A) 3;surviving spouse
B) 2;surviving spouse
C) 2;head of household
D) 3;head of household
E) 1;single