In a Young's Double-Slit Experiment, When $( \pi d / \lambda ) \sin \theta$

Multiple Choice

In a Young's double-slit experiment, when $( \pi d / \lambda ) \sin \theta$ is an odd half-multiple of $\pi ( \pi / 2,3 \pi / 2,5 \pi / 2 )$ the intensity at the viewing screen

A) is a maximum.
B) is a minimum.
C) is halfway between the maximum and minimum.
D) cannot be determined we need $d , \lambda , \text { and } \theta$