A. gratuity = (monthly salary/25) x 15 x no. of years of service
B. gratuity = (monthly salary/30) x 15 x no. of years of service
C. gratuity = (monthly salary/26) x 15 x no. of years of service
D. gratuity = (monthly salary/15) x 15 x no. of years of service
✅ The correct answer is option C.