Hi I don’t know Spanish , but I can help you
Yes! there isn’t anything wrong with the sentence.
In order:
1) soy,es,somos, son
2)es, son,soy somos
3)soy,es,son, somos
4) es,es, soy,son,somos
5)soy, es, son,es
Answer:
B. bien gracias ¿usted?
Explanation:
Since you are talking to an adult, you use the formal "you," usted.