You will be given a definition of a task first, then some input of the task.
Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Abstract: Beading of a retinal vein draining a choroidal melanoma is reported, showing that the endothelial proliferation producing the beading is a response to some blood borne factor(s) traversing the vein and that retinal capillary non-perfusion adjacent to the beaded vein is not a necessary part of the process.
Which is the apt title for the abstract? option1: Inferences from beading of a retinal vein draining a choroidal melanoma. option2: Intraoperative measurement of pericardial constraint: role in ventricular diastolic mechanics.
Output:
Inferences from beading of a retinal vein draining a choroidal melanoma.