Assuming a Stock Does Not Pay Dividends, What Is the Capital

Assuming a stock does not pay dividends, what is the capital gains yield on the stock over one year?

A) $P _ { 1 } + P _ { 0 }$
B) $\left( P _ { 1 } \div P _ { 0 } \right) - 1$
C) $P _ { 0 } + P _ { 1 }$
D) $\left( P _ { 0 } - P _ { 1 } \right) \div P _ { 0 }$