II. Please draw k-space trajectory for (a), (b), and (c) pulse sequences

(a) (b) RF pulse excitation Slice selection 2-gradient Frequency-encoding x-gradient Phase-encoding y-gradient Readout Readout Readout Excitation Slice Selection Frequency Encoding (for) Phase Encoding (ky) readout Readout (a) (b) RF pulse excitation Slice selection 2-gradient Frequency-encoding x-gradient Phase-encoding y-gradient Readout Readout Readout Excitation Slice Selection Frequency Encoding (for) Phase Encoding (ky) readout Readout