JEE Main 2019 Physics question

A particle A of mass 'm' and charge 'q' is accelerated by a potential difference of 50 V. Another particle B of mass '4m' and charge 'q' is accelerated by a potential difference of 2500 V. The ratio of de-Broglie wavelengths is close to:

• (A)4.47
• (B)10.00
• (C)14.14Correct
• (D)0.07