which is the correct answer?

The table shows the hypothetical trade-off between different combinations of Stealth Bombers and B-1 Bombers that might be produced in a year with the limited U.S. capacity, ceteris paribus. Production Possibilities for Bombers Opportunity Opportunity Combination Number of Number of B-1 Cost (Foregone Stealth Cost (Foregone Stealth) B-1) S 0 NA 10 T 9 U 2 7 V 3 4 NA What is the opportunity cost of producing at point V rather than point U? A 1 Stealth Bomber B 1 B-1 Bomber C 10 Stealth Bombers D 0.9 Stealth Bombers