Poisons like cyanide inhibit \[N{{a}^{+}}\]efflux and \[{{K}^{+}}\]influx during cellular transport. This inhibitory effect is reversed by an injection of ATP. This demonstrates that [CBSE PMT 1994]

• A. ATP is the carrier protein in the transport system
• B. \[N{{a}^{+}}\]- \[{{K}^{+}}\]exchange pump operates in the cell
• C. ATP is hydrolysed by ATPase to release energy
• D. Energy for \[N{{a}^{+}}-{{K}^{+}}\]exchange pump comes from ATP