(1 point) Consider the planes lb: + 1y + 22 = 1 and lbc + 22 = 0. (A) Find the unique point P on the yaxis which is on both planes. ( EEE . (B) Find a unit vector u with positive first coordinate that is parallel to both planes. EEE i+ ::: j+ EEE k (C) Use parts (A) and (B) to find a vector equation for the line of intersection of the two planes,r(t) = 555 i+ :=: j+ 555 k NOTE: Part (C) is counted as a single question. All three components must be filled in to receive credit. There are many different correct answers to this