Three LEDs are described by their chromaticity coordinates and luminance values: X1 = 0.15 y1 = 0.1 Lvi = 1000 1m/m-sr X2 = 0.19 yz = 0.72 Lv2 = 1000 1m/m-sr X3 = 0.7 ya = 0.3 Lv3 = 1000 Im/m-sr (a) When these three LEDs are combined, what are the chromaticity coordinate of the resulting color? (b) Determine the dominant/complementary wavelength? (c) What is the total luminance? (d) Will you be able to adjust the driving current for one of the LEDs to obtain white point (0.333,0.333)? If not, how would you propose to do