Question

2 Points

The statement "If A, then B" can best be described as
O
A. If Ais false, then B must be false
O
B. If A is true, then B might be true.
O
C. If Ais false, then B might be false
D. If A is true, then B must be true.

Answer 1

D

Explanation:

This is called "implication". So if A (is true), then B MUST be true. If B is false, the implication is false. In all other cases, the implication is true. Suppose A is false, then it doesn't matter what B is, the implication is true, since we don't care what B is.

It's a bit confusing I suppose. Below is a truth table using P and Q in stead of A and B.