A particle moves towards east from a point A to a point B at the rate of 4 km/h and then towards north from B to C at the rate of 5 km/h. If AB = 12 km and BC = 5 km, then its average speed for its journey from A to C and resultant average velocity direct from A to C are respectively

• A. \(\frac{{17}}{4}km/h\) and \(\frac{{13}}{4}km/h\)
• B. \(\frac{{13}}{4}km/h\) and \(\frac{{17}}{4}km/h\)
• C. \(\frac{{17}}{9}km/h\) and \(\frac{{13}}{9}km/h\)
• D. \(\frac{{13}}{9}km/h\) and \(\frac{{17}}{9}km/h\)