<p>I got an A in Physics 4A, but I had to work like hell. </p>
<p>My major (molecular Bio) requires either the Physics 4 (for scientists and engineers) or Physics 2 (for life science majors) sequences. </p>
<p>I hear you can go from physics 4A to 2B, but not form 2A to 4B. Is this true?
thanksss</p>