A Heat Probe Is Attached to the Heat Exchanger of a Heating

Multiple Choice

A heat probe is attached to the heat exchanger of a heating system. The temperature T (in degrees Celsius) is recorded t seconds after the furnace is started. A model for the data recorded
For the first two minutes is given by $T = \frac { 1351 + 78 t } { 54 + t } . \text { Find } \lim _ { t \rightarrow \infty } T$

A) $1429 ^ { \circ }$
B) $1351 ^ { \circ }$
C) $54 ^ { \circ }$
D) $78 ^ { \circ }$
E) $25 ^ { \circ }$