Only customers with coupons may use the service.
The service is restricted to customers in possession of coupons.
The service is available for coupons only.
Only rich customers can use the service with coupons.
Only customers with coupons are serviced here.
Correct answer: A
Only customers with coupons can use the service.
A. Service is limited to customers who own coupons.
B. Service is only available for coupons.
C. Only wealthy customers can use the service with a coupon.
D. engine maintenance “service” in the wrong context
→ Choose answer A