In this question, it is given that
Kammu VedBraat sells plumbing equipment. He gets an annual salary of $17,496.00 plus 9.5% commission on all of his sales.
Annual salary is $17496, so monthly salary is

And 9.5% of 2460 is

So his January's earning is the sum of monthly salary and 233.70. THat is

Correct option is a