Where is the break$-$even point located in a CVP graph?

Question $3$ options:

a$)$

At the intersection of the sales line and the fixed cost line.

b$)$

At the intersection of the total cost line and the sales line.

c$)$

At the intersection of the variable cost line and the fixed cost line.

d$)$

At the intersection of the mixed cost line and the sales line.