Bad Qubits — Learn Quantum by Doing

Multiple choice

A 2x2 matrix A has rows (1, 2i) and (3, 4). For the adjoint A-dagger, where (A-dagger)[i][j] = conj(A[j][i]), what is the imaginary part of the entry in row 1, column 0?

3 (the real entry A[1][0])
0
-2
2