[amp_mcq option1=”1.15 D” option2=”1.25 D” option3=”1.5 D” option4=”1.75 D” correct=”option3″]
The correct answer is $\boxed{\text{B}}$.
The overall depth of a standard egg-shaped section is equal to the diameter of the upper circular portion plus the diameter of the lower circular portion divided by 2. This can be expressed mathematically as:
$$d = D + D / 2 = 1.25 D$$
where $d$ is the overall depth, $D$ is the diameter of the upper circular portion, and $d$ is the diameter of the lower circular portion.
Option A is incorrect because it is the diameter of the upper circular portion. Option C is incorrect because it is the diameter of the lower circular portion. Option D is incorrect because it is greater than the overall depth of a standard egg-shaped section.