Magnetic Field of Straight Wires question from JEE Main 2019 (8 Apr, Shift 2)

Answer: (c)

1. Wire along x (current $+x$), P at distance $d$ above it: $\frac{\mu_0 I}{2\pi d}$ along $+\hat{z}$.
2. Wire along y (current $+y$), P at distance $d$ to its right: $\frac{\mu_0 I}{2\pi d}$ along $-\hat{z}$.
3. Equal and opposite, so $B = 0$.
4. So the answer is (c) zero.