1 . AT+BC

• A. $4\times 2$
• B. $4\times 3$
• C. $4\times 4$
• D. $4\times 5$

Answer: Option A

Explanation:

2 . AT+BC

• A. $4\times 2$
• B. $5\times 4$
• C. $5\times 2$
• D. $2\times 5$

Answer: Option C

Explanation: