‚Äö√Ñ√∂‚à ö√ë‚à ö‚⧂âà √≠¬¨¬± |= ‚âà √≠‚Äö√¢¬ß ‚Äö√Ñ√∂‚à ö√ë‚à ö‚â§(to mean that the sentence ‚âà √≠¬¨¬± entails the sentence ‚âà √≠‚Äö√¢¬ß) if and only if, in every model in which ‚âà √≠¬¨¬± is _____ ‚âà √≠‚Äö√¢¬ß is also _____$

• A. True, true
• B. True, false
• C. False, true
• D. False, false