Vector A points along the negative x axis and vector B along the positive z axis. Part A What is the direction of AB$?$ O positive x direction O negative x direction positive y direction O negative y direction O positive z direction O negative z direction Submit Request Answer Part B Submit Request Answer Vector A points along the negative x axis and vector B along the positive z axis. Part B What is the direction of B x $?$ O positive x direction O negative x direction O positive y