$80$

Sam started a new job in July of last year. He received a total of $12$ paycheques last year totaling $$19,600.$ On January $7$ th of this year, Sam received a paycheque for $$1,640$ covering the two week period from December $24$th of last year to January $7$th of this year. In addition, on December $23$rd of last year, Sam was informed that he would be getting a bonus of $$2,000$ in respect of his performance during last year, but that the bonus would not be paid until February $2$nd of this year. What was Sam's taxable employment income for last year?

a$)$ $$19,600$

b$)$ $$20,420$

c$)$ $$21,600$

d$)$ $$22,420$