If channel length modulation is neglected, what is the overall voltage gain of the following circuit?

• A. – {gm1 * (Rd || 1/gm2) * (Rd1/ (1/gm2 + Rd))}
• B. – {gm1 * (Rd || 1/gm2) * gm2 * 2Rd1}
• C. – {gm1 * Rd * gm2 * Rd1}
• D. )}b) – {gm1 * (Rd || 1/gm2) * gm2 * 2Rd1}c) – {gm1 * Rd * gm2 * Rd1}d) – {gm1 * 1/gm2 * gm2 * Rd1}