What is the gross pay for Trent if he is paid a salary of $300 per week and has gross sales of $7,700? Trent is paid commission based on the following: 2% for any sales between $5,000 and $6,000 3% for any sales between $6,000 and $7,000 4% for any sales above $7,000 A. $378 B. $178 C. $478 D. $608