Cleo's Husband Died in January of 2014

Cleo's husband died in January of 2014.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 2015 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