Suppose the standard deviation for the Martin Products Distribution is $4\mathrm{.}0.$ If an investor is hoping for a return of at least $13\%,$ the chances that investing in Martin Products will return at least $13\%$

a$.$ are much less than in investing in U$.$S$.$ Water

b$.$ are the same as investing in U$.$S$.$ Water

c$.$ are greater than in investing in U$.$S$.$ Water

d$.$ cannot be determined

As the standard deviation of outcomes for Martin Products increases, investing in Martin Products becomes riskier because

a$.$ the range of outcomes having some probability becomes wider

b$.$ an outcome at or near the expected return of $10\%$ becomes less likely

c$.$ although the chances of some big gains increase, the chances for some big losses also increase.

d$.$ all of the above reasons

e$.$ none of the above reasons