What is the minimum X-ray wavelength produced when electrons are accelerated through a potential of 50000 V? (h = 6.63 × 10-34 J s, c = 3 × 108 m/s, 1 eV = 1.6 × 10-19 J)

• A. 35.8 × 10-12 m
• B. 68.3 × 10-12 m
• C. 19.6 × 10-12 m
• D. 24.9 × 10-12 m