You shine a laser pointer through a diffraction grating and measure the pattern on the left below with your by moving your photodetector horizontally along the table. Which of the gratings did the laser shine through (i.e., which is the correct orientation and type of grating to give this pattern)? For all slits, the width is 0.3 mm. The slits in grating B are 1.0 mm apart. The circle has a diameter of 2.0 mm.Slit ASlit BSlit CSlit D