Practice question

L = r×p = |i^j^k^400−5−30| = k^(4×(−3)−0×(−5)) = −12k^kg m2/s. Z-component = −12kg m2/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to -12 kg m²/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.