Are cursor.size() and cursor.count(true) equivalent?

Determine which, if any, of the three statements are equivalent.?

• I) If the house is not brick, then the house is small. II) Either the house is brick or the house is small. III) Either the house is not brick or the house is not small I and II are equivalent I and III are equivalent II and III are equivalent I, II, and III are equivalent None are equivalent

• Answer:

  II and III are equivalent.