Find the Common Difference of the Sequence $\mathrm { a } _ { 1 } = 814 , \mathrm { a } _ { 4 } = 829 \text {; find } \mathrm { d }$

Multiple Choice

Find the common difference of the sequence.
- $\mathrm { a } _ { 1 } = 814 , \mathrm { a } _ { 4 } = 829 \text {; find } \mathrm { d }$

A) -814
B) 814
C) -5
D) 5