What is the largest discovered star? (by radius)

VY Canis Majoris
V396 Centauri
UY Scuti
Alfa Persei
UY Scuti is a bright red supergiant and pulsating variable star in the constellation Scutum. It is currently the largest known star by radius and is also one of the most luminous of its kind. It has an estimated radius of 1,708 solar radii (1.188×109 kilometres; 7.94 astronomical units); thus a volume nearly 5 billion times that of the Sun. It is approximately 2.9 kiloparsecs (9,500 light-years) from Earth. If placed at the center of the Solar System, its photosphere would at least engulf the orbit of Jupiter.
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Answers by country

VY Canis Majoris
V396 Centauri
UY Scuti
Alfa Persei
answers
flagAustralia
33%
13%
46%
6%
15
flagIndia
23%
26%
43%
5%
117
flagthe United States
26%
22%
42%
10%
50
flagPoland
29%
31%
26%
12%
2203
flagAustria
33%
25%
25%
16%
12
flagGermany
47%
20%
16%
15%
72
flagthe United Kingdom
34%
42%
11%
11%
26
flagthe Philippines
54%
36%
9%
0%
11