The following statements are about low power operation of the KL$25$Z$.$ Decide whether each statement is true of false and choose the appropriate option. However, don't choose either option if you are unsure as incorrect choices lose marks. $[$NVIC$]$ In a low power mode where the NVIC $($nested vector interrupt controller$)$ is disabled, an edge on an input pin can no longer be detected $($e$.$g$.$ to trigger an interrupt$).[$Gating$]$ The expression 'power gating' means switching off a part of a logic circuit to reduce leakage current. $[$State$]$ The RAM and CPU registers retain their state $($i$.$e$.$ values$)$ even when the microcontroller chip is powered off.$[$CPU$]$ In all wait$/$sleep modes where the CPU does not run, the peripherals do not operate and all memory data $($including in peripheral registers$)$ is lost. $[$Volt$]$ Reducing the operating voltage of a logic gate reduces the energy used when it switches state.