Indigo Industries is considering two new machines. Machine A will generate revenues of $120,000, have variable costs of $40,000, and fixed costs of $8,000. Machine B will generate revenues of $140,000, have variable costs of $30,000, and fixed costs of $8,000.

What is the incremental revenue?

A : $10,000
B : $30,000
C : $0
D : $20,000