All of the following are implications of strategic groups excepta. the strength of the five forces differ across strategic groups. b. the strength of the five forces is the same across strategic groups. c. competitive rivalry within strategic groups is greater than between strategic groups. d. the closer the strategic groups are in terms of strategies, the greater is the likelihood of rivalry.

The answer here is option b) the strength of five forces is the same across strategic groups.

Explanation:

First of all , strategic group can be defined as a concept which is often used in the strategic management, where with in an industry, companies who have same business models or strategies are grouped together.

Option a) is correct here as the strength of five forces would be different across various strategic groups,

Option b) is incorrect because the strength of five forces cannot possibly be same for every strategic groups.

Option c) is correct as the competitive rivalry within the group is much more than the rivalry between strategic groups because firms with in a strategic groups have same business models and they're competing against each other.

Option d) is correct as similar the these groups are in terms of strategies , the likelihood of rivalry between them would be much higher as they're in direct competition with each other.