In this case the right answer is letter c
There are many costumes in the likes of Carlos
the answer is
Marta y Julia, Ustedes son dos conductoras excelentes
somos = we (or you and I ) first person plural
es = is third person singular
ser (presente)
yo soy
tu eres
él, ella, Usted es
nosotros somos
vosotros sois
ellas, ellos, Ustedes son
hope I helped !
C. estoy; estamos because estoy is "I am" and estamos is "we are"