A Consumer Has Placed Two Orders for a New Product $X$

Multiple Choice

A consumer has placed two orders for a new product from two different suppliers $X$ and $Y$ . The probabilities that the suppliers deliver the product on time are 0.40 for $X$ and 0.60 for $Y$ .45) If the probability of one supplier delivering the product on time has no effect on whether or not the other one does, find the probability that one or both of the suppliers will deliver the product in the required time.
-If $X$ is the event that supplier $X$ delivers the product on time, and $Y$ is the event that supplier $Y$ delivers on time, the events $X$ and $Y$ are:

A) independent.
B) mutually exclusive.
C) complementary.
D) none of these.