On a linear temperature scale Y , water freezes at $- 160 ^ { \circ } \mathrm { Y }$ and boils at $- 50 ^ { \circ } \mathrm { Y }$. On this Y scale, a temperature of 340 K would be read as : (water freezes at 273 K and boils at 373 K )\\
(1) $- 73.7 ^ { \circ } \mathrm { Y }$\\
(2) $- 233.7 ^ { \circ } \mathrm { Y }$\\
(3) $- 86.3 ^ { \circ } \mathrm { Y }$\\
(4) $- 106.3 ^ { \circ } \mathrm { Y }$