It is A. 6.9 x 10^5 Because <span><span>2.3<span>(<span>10<span>−3</span></span>)</span></span><span>(<span>3<span>(<span>108</span>)</span></span>)</span></span><span>=<span><span>2.3<span>(<span>11000</span>)</span></span><span>(<span>3<span>(<span>108</span>)</span></span>)</span></span></span><span>=<span>0.0023<span>(<span>3<span>(<span>108</span>)</span></span>)</span></span></span><span>=<span><span>0.0023<span>(3)</span></span><span>(100000000)</span></span></span><span>=<span><span>(0.0023)</span><span>(300000000)</span></span></span><span>=<span>690000