Multiply each option. Check the thousands digit of each product.

A: 48 × 75	=	3,600 → thousands digit = 3 ✓
B: 3 × 997	=	2,991 → thousands digit = 2
C: 55 × 74	=	4,070 → thousands digit = 4
D: 596 × 8	=	4,768 → thousands digit = 4
Only option A (48 × 75 = 3,600) has digit 3 in the thousands place.